Under the administration of President Barack Obama, the Dept. of Homeland Security created an impression that the biggest threats to national security come from the Right. In 2009 shortly after Obama took office, DHS issued a report titled “Rightwing Extremism.” The report stirred up a lot of controversy because just about anyone who didn’t like big government would be classified as an extremist. This is the way the Left categorizes supporters of Tea Party principles.
Recently Obama’s DHS chief Janet Napolitano came up with the ‘See Something, Say Something’ campaign. DHS videos showed suspicious people wearing hoodies—they were mostly white people.
A terrorism report funded by U.S. taxpayers turned up some information that flies in the face of Obama's politics. Historically, the Left has done far more damage than the Right.