Competing currents in the civil rights movement. On one hand, there was MLK with his non-violent approach. On the other hand, there were assorted militant black elements primarily following orders from Moscow.
One cannot help but notice that since the Soviet Union fell, there have been none of the periodic riots that characterized the 60's, 70's and 80's. One can safely throw in the LA riots into that group since it occurred so soon after the Soviet Union collapsed.
See my earlier post a few up about the Cincy riots of April 2001. Nothing like the scale of MLK or Rodney King, but there it is. Well after the fall of the Soviet Union.
Also, the sort of dispersed attacks on whites that Colin Flaherty documents could be seen as a sort of ongoing dispersed riot.
http://whitegirlbleedalot.com/