Mark Zuckerberg Calls Out Trump and Other 'Fearful Voices' 'It takes courage to choose hope over fear' By Michael Harthorne, Newser Staff Posted Apr 12, 2016 4:04 PM CDT 138 comments Comments Facebook CEO Mark Zuckerberg holds a pair of virtual reality handsets during the keynote address at the F8 conference on Tuesday. (AP Photo/Eric Risberg) (Newser) – Mark Zuckerberg launched what the Guardian calls a "thinly veiled attack" against Donald Trump, his policies, and his supporters during his keynote address at the F8 conference on Tuesday. "I hear fearful voices calling for building walls and distancing people they label as others. For blocking free expression, for slowing immigration, reducing trade, and in some cases around the world even cutting access to the internet," the Verge quotes the Facebook founder as saying. While Zuckerberg didn't mention Trump by name, the Verge notes it was "quite clear" who he was talking about, and Gizmodo reports he spent five minutes "denouncing the policies" of the Republican frontrunner. Zuckerberg, who spoke out against building a wall on the US-Mexico border and has lobbied for allowing more foreign workers into the country, said it's important for Facebook to build bridges instead of the walls—both literal and metaphorical—pushed for by Trump and others like him. "It takes courage to choose hope over fear," the Verge quotes him as saying. "People will always call you naive, but it’s this hope and this optimism thats behind every important step forward." Zuckerberg also used his time to talk about the future of artificial intelligence, virtual reality, and bringing Internet to the developing world. "I think the work we’re doing together is more important than it has even been before,” the Guardian quotes him as saying.