Some may be ROOTED in legitimate issues, but the commie left typically exaggerates the hell out of the situation, if not outright concocting crap, the "reverend" Sharpton/Tawana Brawley case is one of a million examples.
Communists will use/corrupt ANY movement, even some that are diametrically opposed to their end goals, like Christianity, in order to advance their agenda.
read this, if you haven’t:
http://www.amazon.com/You-Can-Still-Trust-Communists/dp/0936163208