An “Obama effect” has “generated a backlash of white supremacy,” which may have contributed to yesterday’s shooting at the U.S. Holocaust Memorial Museum, Jack Levin, a criminologist at Northeastern University, told the Christian Science Monitor. “Jews and blacks in the White House—that’s threatening to someone who believes that blacks are subhuman and Jews are the children of the devil,” Levin said. The CSM explores the trajectory of radicalization, which, as first employed by the Ku Klux Klan, often involves an ideological movement with no clear leader, built up of various “organs of information”—all protected by the First Amendment—that build up to imply, rather than state, that a violent solution could be called for. That structure makes it hard for law-enforcement to anticipate and stop the so-called “lone wolves” who end up acting on those implications, experts told the paper. It’s all fueled now, the paper said, “by overseas anti-American fervor as well as by homegrown right-wing groups angered by the state of the economy and the election of the nation’s first black president.” Great.