For those who haven't read lots of primary documents and history books on the subject, here's a good example of the way they used to put it—and still do.
Your so-called civil rights workers who were killed were nothing but northeastern carpetbaggers, infiltrated by communists, down here to stir up trouble.
(Jimmie L. Morgan, age 70, Aug 29, 2005, Amory, MS)
I have read it in the books, but I also lived in the South.-) Talk about primary sources!