PHILADELPHIA (AP) — The Latest on the Democratic National Convention in Philadelphia (all times EDT):

10:40 p.m.

Elizabeth Warren is offering a harsh assessment of an American economy that she says is tilted against working people.

The liberal favorite and Massachusetts senator says "there's lots of wealth in America" but "it isn't trickling down to families like yours."

Instead, she tells delegates at the Democratic National Convention on Monday night, the "system is rigged" as "Americans bust their tails" while "wages stay flat."

Warren rejects those who say such an economy is a result of a Congress that isn't working. She says Congress works fine when corporations and the wealthy seek tax breaks and favorable regulations.

But she says, "try to do something for working people," and the "gridlock" ensues.

Warren says GOP presidential nominee Donald Trump's "whole life has been about taking advantage of that rigged system."

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10:30 p.m.

Elizabeth Warren says the choice in the presidential election is clear, and she says Republican nominee Donald Trump "cares about himself every minute of every day."

The Massachusetts senator is a favorite among liberals, and she's speaking at the Democrat National Convention on Monday night as the party tries to unite around Hillary Clinton after a divisive primary.

Warren tells the crowd: "I'm with Hillary. This choice is personal. It's about who we are as a people."

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10:20 p.m.

Michelle Obama says she wants a president who knows issues "cannot be boiled down to 140 characters."

Once again she's not mentioning Republican presidential nominee Donald Trump by name in her speech at the Democratic National Convention.

But she is citing his penchant for communicating on Twitter and says she wants someone who understands that issues aren't always clear.

And, she adds, "That's why in this election. I'm with her."

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10:15 p.m.

Michelle Obama says Hillary Clinton is advancing the cause for women so "all our sons and daughters now take for granted that a woman can be president of the United States."

The first lady also is linking Clinton's quest to be the first woman elected president and Barack Obama's historic tenure in the White as the first black president.

Michelle Obama recalls the history of black Americans who "felt the lash of bondage" and the "sting of segregation."

Michelle Obama says that now, she gets to "watch my daughters, two intelligent black young women, play with their dog on the White House lawn."

The first lady also is pushing back on Republican presidential nominee Donald Trump's slogan to "make America great again."

She says, "Don't let anyone ever tell you that this country isn't great. That somehow we need to make it great again. Because this right now is the greatest country on earth."

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10:12 p.m.

California delegates backing Bernie Sanders are sitting still as Michelle Obama speaks at the Democratic National Convention, rather than starting chants as they did over other speakers.

Several yelled "no" when the first lady declared "I'm with her," a slogan for Clinton backers.

But the response is far more muted than the backlash that greeted other speakers. The California delegation has been one of the loudest on Monday night in expressing their opposition to Clinton.

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10:10 p.m.

Michelle Obama is offering an unequivocal endorsement for Hillary Clinton.

The first lady says Clinton — a former secretary of state, senator and first lady herself — is the "one person who I truly believe is qualified to be president of the United States."

Michelle Obama says in her speech at the Democratic National Convention that Clinton "never buckles under pressure." She says Clinton would be the kind of president that she wants for her own daughters.

Michelle Obama notes Clinton's reaction to her 2008 Democratic primary loss t Barack Obama. Michelle Obama says Clinton "didn't get angry or disillusioned" and "did not pack up and go home."

She says Clinton has "never quit on anything in her life."

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10:05 p.m.

Michelle Obama is calling out Donald Trump in her remarks at the Democratic National Convention.

The first lady says that "when someone is cruel or acts like a bully, we don't stoop to their level."

She's not mentioning the Republican presidential nominee by name, but she's is decrying what she calls "hateful language." She says that goes against what she tries to teach her children.

Her message? She says, "When they go low, we go high."

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9:50 p.m.

Republican presidential nominee Donald Trump seems to be reveling in the drama at the Democratic National Convention as he campaigns with running mate Mike Pence.

"What a mess they have going," Trump tells supporters Monday night at a rally in North Carolina.

Trump says rival Hillary Clinton made a mistake by not choosing a more liberal running mate to appease Bernie Sanders' supporters.

Trump says: "Crazy Bernie's going crazy right now."

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9:40 p.m.

A warmup speaker at a Donald Trump rally is calling President Barack Obama a racist.

Mark Burns is a black pastor who often speaks at Trump events, and last week he had a prime-time speaking slot at the Republican National Convention.

Burns said at a Trump event in North Carolina on Monday that "President Obama is the racist."

Burns also says Democrats should be ashamed for inviting the mother of Michael Brown to speak at their convention.

Michael Brown was the unarmed black 18-year-old who was shot to death by a white police officer in Ferguson, Missouri.

Burns contends the invitation reaffirms that blacks should be afraid of police.

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9:25 p.m.

Comedian Sarah Silverman isn't mincing words in her message to die-hard Bernie Sanders supporters.

Here's what she says Monday night at the Democratic convention: "Can I just say to the Bernie or bust people, you're being ridiculous."

Silverman was one of a number of prominent entertainers who backed Sanders in the Democratic primary against Hillary Clinton. But Silverman is telling the crowd in Philadelphia — and a national television audience — that she plans to vote for Clinton.

The crowd broke into chants of "Bernie, Bernie," but Silverman quickly shot back with her quip.

As the crowd roared in applause, Minnesota Sen. Al Franken — standing next to Silverman — joked, "Listen to what you did."

Franken noted that because he was a Clinton backer and Silverman was with Sanders, they were forming a bridge.

"We're like a bridge over troubled water," he said, and they next went on to introduce singer Paul Simon.

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9:10 p.m.

Al Franken went to Harvard University, but at the Democratic National Convention, he's claiming a degree from Trump University instead.

The former "Saturday Night Live" comedian — who's now a Minnesota senator — jokes that he's a "world-renowned expert on right-wing megalomaniacs: Rush Limbaugh, Bill O'Reilly and now, Donald Trump."

Franken adds: "Now a little about my qualifications. I got my doctorate in megalomaniac studies from Trump University."

Trump — the Republican presidential nominee — faces lawsuits accusing him of defrauding customers at the now-defunct Trump University, which sold real estate seminars.

Franken asked the crowd of delegates if they knew that "Trump University's School of Ripping People Off is ranked second in the nation, right behind Bernie Madoff University?"

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8:50 p.m.

Democrats at their national convention are going after Donald Trump's business record.

Sen. Bob Casey of Pennsylvania is questioning where the Republican presidential nominee's products were made.

Here's what Casey says: "Dress shirts - Bangladesh. Furniture - Turkey. Picture frames - India. Wine glasses - Slovenia. Neck ties - China."

He adds, "Why would Donald Trump make his products in every corner of the globe but not in Altoona, Erie or here in Philadelphia?"

And Sen. Kristen Gillibrand of New York recalls Trump's comments about U.S. wages being too high.

She says Democrat Hillary Clinton "knows that in the richest country in the world, it's unacceptable that a mom with two kids working full time still lives in poverty."

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8:40 p.m.

Debbie Wasserman Schultz is in the building.

The outgoing Democratic Party chairwoman is watching Monday's opening night of the national convention from a private suite at the Wells Fargo Arena in Philadelphia.

The Florida congresswoman's resignation from the party post will take effect Friday.

She stepped down after the release of hacked emails suggested staff at the Democratic National Committee favored Hillary Clinton over Bernie Sanders in party's presidential primaries.

Wasserman Schultz was heckled Monday morning when speaking to her home state's delegation at breakfast. She later decided against gaveling in the convention amid concerns she'd draw more ire from Sanders supporters.

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8:25 p.m.

Hillary Clinton was campaigning in Las Vegas earlier this year when she heard directly from a young girl who was worried because her parents are living in the United States illegally.

Now 11-year-old Karla Oritz has told her story to a national audience — from the stage at the Democratic National Convention.

Karla's an American citizen who appeared with her mother at the Philadelphia gathering. Karla says she worries about what might happen if she comes home and finds her house empty.

That conversation she had with Clinton in Las Vegas ended up as part of a television ad for the Clinton campaign.

Karla says she remember how Clinton called her brave. The youngster says she wants to grow up to be a lawyer, so that "I can help other families like us."

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8:15 p.m.

Liberal stalwart Elizabeth Warren is using her Democratic convention speech to make clear her view that Americans won't fall for Donald Trump's plan to fan what she calls "the flames of fear and hatred."

The Massachusetts Democrat says in excerpts of a speech she plans to deliver later Monday that the Republican presidential nominee is peddling an old story of "divide and conquer."

Warren says Trump thinks he can win votes "by turning neighbor against neighbor" and by persuading voters that the source of their problems is "people who don't look like you, or don't talk like or don't worship like you."

She says bankers, oil companies and giant corporations benefit "when we turn on each other."

Warren says a divided America can't "fight back against a rigged system." She says "the American people are not falling for" Trump's divisive rhetoric.

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8:05 p.m.

Cory Booker is calling for the Democratic party to unite around Hillary Clinton — and the Democratic senator from New Jersey says Clinton would be a champion for the poor as president.

Remarks of Booker's speech at the party's convention have come out before his remarks later Monday. He says Clinton would measure America's greatness not by the number of millionaires and billionaires, but by how few people are living in poverty.

Booker says the country doesn't always have to agree, but the U.S. can't became a place "where our highest aspiration is that we just tolerate each other."

Booker also champions debt-free college, which he says represents the best of the Democratic party.

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7:55 p.m.

Singer Demi Lovato is belting out her hit "Confident" at the Democratic National Convention.

Lovato performed for presidential candidate Hillary Clinton in Iowa during the campaign, and she's one of the first bold-faced names to appear on the convention stage.

The convention opened with a performance from Boyz II Men. Paul Simon is set to perform later Monday, and delegates are set to hear from actress and activist Eva Longoria.

Before performing, Lovato told the crowd of delegates at the Wells Fargo Center in Philadelphia that "like millions of Americans, I am living with mental illness."

She says, "But I am lucky. I had the resources and support to get treatment at a top facility." She says Hillary Clinton will help Americans in need of care get the treatment they require.

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6:50 p.m.

"I wouldn't vote for her for dog catcher."

That's the sentiment of a Bernie Sanders delegate when talking about whether she'd support Hillary Clinton.

"No, never in a million years" — Melissa Arab of Shelby Township, Michigan, is making abundantly clear.

She says she's going to work as hard as she can to make Sanders the Democratic nominee for president.

She says "that's what I'm pledged to do and that's what Bernie told me to do."

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5:50 p.m.

Bernie Sanders may have asked his supporters as a "personal courtesy" not to protest at the Democratic convention — but not everyone's willing to heed that request.

Michigan delegate Bruce Fealk says he understands Sanders' position and understands why the Vermont senator is making the request.

But Fealk also says: "I'm really annoyed. ... I haven't decided yet. I want to support Bernie, but I also want to voice my displeasure with the Democratic Party."

Fealk says he sees the hacked party emails as a revelation, and says they show the party's disrespect for progressives.

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5:25 p.m.

A Democratic official says Bernie Sanders' campaign has urgently reached out to Hillary Clinton's team to express concerns that tensions are still raw among Sanders delegates.

They're fuming about hacked party emails that already have led to the ouster of the head of the Democratic National Committee, Debbie Wasserman Schultz.

Aides to Clinton and Sanders have met in hopes of forming a plan to avoid excessive disruptions on the convention floor.

The Democratic official spoke on condition of anonymity in order to discuss the private discussions.

Sanders has sent out a text message and an email to delegates urging them not to engage in protests on the floor as a "personal courtesy" to him.

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5:05 p.m.

Bernie Sanders is urging supporters not to demonstrate on the floor of the Democratic National Convention.

He's sending out text messages and emails with his personal request.

Sanders is characterizing the request "as a personal courtesy to me" and urging his followers to "not engage in any kind of protest on the floor."

The Vermont senator says it is of the "utmost importance" that this be explained to the state delegations.

Sanders say "our credibility as a movement will be damaged by booing, turning of backs, walking out or other similar displays."

The challenger to Hillary Clinton is speaking later Monday at the Philadelphia convention.

It comes as many of his supporters contend the Democratic National Committee failed to be neutral during the primaries.

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4:55 p.m.

Donald Trump is suggesting China may have been involved in the hack of the Democratic National Committee's email system — even though there's no evidence to indicate Chinese involvement.

Trump made the comment at an event in Virginia — and it comes in reference to the decision by Democratic National Committee head Debbie Wasserman Schultz to step down in the wake of the email disclosure.

Here's what Trump said, with sarcasm: "Little did she know that China, Russia — one of our many, many friends — came in and hacked the hell out of us."

The cybersecurity firm CrowdStrike Inc. discovered traces of at least two sophisticated hacking groups on the Democrats' network — and both have ties to the Russian government.

Trump's campaign has laughed off suggestions that the Russians may be trying to influence the election in the Republican's favor.

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4:45 p.m.

The Democratic National Committee is offering its "deep and sincere apology" to Bernie Sanders, his supporters and the entire party for what it calls "the inexcusable remarks made over email."

The statement from incoming interim party leader, Donna Brazile, and six other officials says the comments in the emails "do not reflect the values of the DNC or our steadfast commitment to neutrality during the nominating process."

The statement says the party won't tolerate disrespectful language.

The statement wasn't signed by the outgoing DNC head, Debbie Wasserman Schultz.

She announced on Sunday that she'd step down from that job at the end of this week's Democratic National Convention in Philadelphia.

The emails suggested party officials favored Clinton over rival Sanders during the primaries.