I think they are pissed about being marginalized. Racism has existed for a long time, there's no reason for those who barely see a black person to feel demonized.
Racism

We have a black president and attorney general. We have blacks at every strata of society. We have programs specifically designed to give black people free food and free money for doing nothing but procreating. We have programs specifically designed to "encourage" colleges to take underperforming black kids over higher performing kids of other colors. We have programs designed to force employers to hire black people even if they are imbeciles to do nothing.
What the hell else do you want? If you want to end "racisim", perhaps our government AT EVERY LEVEL should be told to stop being racist against non-blacks. How about black people and white people be judged by the content of their hearts and not the color of their skin? That would be truly something to see. But we never will, because black grievance is a powerful political force and it is a requirement that the black man stay on the democrat plantation. So the free shit will continue and the black man will continue to be the democrat's cattle.