The Southern Poverty Law Center, which has done yeoman's work on tracking violent groups, notes that "Currently, there are 1,018 known hate groups operating across the country, including neo-Nazis, Klansmen, white nationalists, neo-Confederates, racist skinheads, black separatists, border vigilantes and others. And their numbers are growing." The Center's data show that hate groups have increased by 69 percent in the last decade. And the so-called "Patriot" groups have increased nearly 800 percent since Obama became president.
If the news media and political leaders were told there were a thousand violence-prone Muslim groups operating in the United States, can you imagine the reaction? Yet, apart from the glancing attention given incidents like the Sikh temple massacre, the national discourse about terrorism focuses almost exclusively on Muslims.
The same goes if they were white and on the radical left.