"Some Muslim advocates complain that when the perpetrator of an attack is not Muslim, news media commentators quickly focus on the question of mental illness. “With non-Muslims, the media bends over backward to identify some psychological traits that may have pushed them over the edge,” said Abdul Cader Asmal, a retired physician and a longtime spokesman for Muslims in Boston. “Whereas if it’s a Muslim, the assumption is that they must have done it because of their religion.” On several occasions since President Obama took office, efforts by government agencies to conduct research on right-wing extremism have run into resistance from Republicans, who suspected an attempt to smear conservatives. A 2009 report by the Department of Homeland Security, which warned that an ailing economy and the election of the first black president might prompt a violent reaction from white supremacists, was withdrawn in the face of conservative criticism. Its main author, Daryl Johnson, later accused the department of “gutting” its staffing for such research."