There were six or seven black college girls active in the CIVIC interest group and two intelligent, socially concerned, black guys, both of whom were dating very liberal white girls in the group. My 100% is based on that limited sample but if you had experienced the intensity of their anger, you would not question how general their POV on this was.
So you admit what we already knew, because it is true of all bigoted beliefs: that it is based on a very small, very parochial experience that you've projected on the entire race (or race and sex, as is the case here). This is no different than an earlier poster who claimed to know "several women who lied about being raped," but only made direct reference to one, and how 786 or whatever his name is talks about "knowing more black racists than white racists." These generalizations are almost exclusively based on one or two (or a few) examples that the bigot has then turned into "several" or in your case, "all."
In no way does the intensity of their racism speak to a general consensus among black women. If that were true, then the intensity of the neo-Nazi movement should speak to a general consensus among all white Americans of their superiority over other races and ethnicities.