I was debating with a supremacist (white) who mentioned MLK's communist associations during the movement.

I have no idea what and who he dealt with. But I do know that he felt that there was an urgency to turn things around and whom ever at the time was willing to help out was greatly appreciated. Certainly communists have used people at different periods and places because of the circumstances that they were in to the 'party's' advantage.

Which is why governments should have learned by now that the keeping of a second or third class citizentry is a incubator for these people. You will share the wealth one way or another. A show of conspicuous consumption is a magnet of them.

Marx and Lennin used the tools available to them to promote their base.