Attorney General Eric Holder, asked whether three attacks on the United States (the underwear bomber, the Times Square bomber and Maj. Nidal Hassan) could be attributed to "Islamic" radicalism, refused to say so. Asked repeatedly whether religious motives played a role, Holder would say only, "there are a variety of reasons why people have taken these actions." Janet Napolitano has been quick to dismiss terror attempts as "one offs." Would Holder and Napolitano say the same about white supremacists? Each one had his own motivations and we can't surmise what those factors were?
There is a tendency among many on the left to temper their disgust and indignation at political violence (i.e. terror) if the terrorist is from the "correct" group. "Muslim ... means not being white" Peter Beinert writes in the Daily Beast.
Beinert and other liberals imagine that the U.S. is a cauldron of teeming racism with the lid barely kept down. At the first acknowledgment that Islamists (some, but by no means, all of whom are dark skinned) present a continuing threat, the lid will fly off and white American vigilantes, given permission, will start shooting black and brown people on the streets, burning their shops, and bombing mosques.
The hatred that Islamism preaches, lauds and inspires is a nuisance, liberals may concede. But the hatred in the heart of "white America" is the greater danger.