In the last few weeks, the alarming rise of vitriolic anti-immigrant, xenophobic rhetoric from the right wing has alarmed a large segment of the American people, but equally disturbing is how much support these noxious views are getting from the public. After the civil rights achievements of the 1960s, it was widely assumed that tolerance and diversity would win the day. Many studies show that growing familiarity with the "other" typically yields more tolerant attitudes. But this recent spasm of hatred is shocking in its intensity and in the apparent rejection of that decades-long progress toward social peace. Many even call it fascism. Why has this reversal suddenly appeared?