Massacre Manifesto Linked to US Muslim-Bashers Anders Breivik cites Robert Spencer, Pamela Geller By Mary Papenfuss, Newser User Posted Jul 26, 2011 2:19 AM CDT 35 comments Comments Anders Behring Breivik sits in an armored police vehicle after leaving the courthouse following a hearing in Oslo yesterday. (AP Photo/Aftenposten/Jon-Are Berg-Jacobsen) (Newser) – An American right-wing extremist is cited some 64 times in the crazed manifesto written by Norwegian mass killer Anders Behring Breivik in a bid to justify his terror attack. Robert Spencer, co-founder of the Jihad Watch and Stop Islamization of America (recently hacked) blogs denied any responsibility for the attack, calling his writings a "defense of human rights." If "somebody gets from that that they should kill, well then he's nuts," he told NBC News. But some observers believe heated hate speech can trigger such actions. “When you push the demonization of populations, you often end up with violence,” warned the research director for the Southern Poverty Law Center. The manifesto also frequently cites the blog Atlas Shrugs by Muslim-basher Pamela Gellar, who insisted that if anyone incited Breivik to violence "it was Islamic supremacists." One expert called the Norwegian tragedy a "wake up call" for US security. A 2009 Department of Homeland Security report warned of a growing threat from home-grown right-wing extremists and hate groups. “We could have a similar attack here, and that’s my greatest fear,” said former federal terror analyst Daryl Johnson. It wouldn't be fair to blame the American bloggers who influenced Breivik, a former CIA analyst tells the New York Times. Still, he adds: "This rhetoric is not cost-free."