On Thursday, just hours after the FBI released blurry pictures of the two suspected Boston Marathon bombers, CNN anchor Erin Burnett assumed the suspects were "stereotypically" white Americans and not linked to any foreign terror group. It turned out that the suspects--Dzhokhar and Tamerlan Tsarnaev--are technically "white" as they are ethnically Chechen (although Dzhokhar recently became a citizen). But what Burnett, like many in the mainstream media who instinctively assume such acts are committed by those who look like Timothy McVeigh, was implying was that the suspects in the photos were white Americans who were born in this country. "They...