@MontereyJack,
I grew up around racists. My grandmother was a serious racist from Appalachia and I am not sure they had seen more than a couple black folk until my dad moved them up to central NY with us due to grandfather's illness.
I had a black friend that I played chess with and not realizing the extent of the racism from my grandmother I had invited him over after school. "You can't bring that nigger in the house."
I had no response. My friend and I left and I was deeply apologetic and had no explanation for him. I would never have invited him had I known they were like that.
So, I know racism. It's horrible. Absolutely horrible and what happens on A2K is not racism. There is some prejudice. There is some intolerance. But there is no real racism going on here.