Only a fool would argue that racism doesn't exist. As long as race is a concept there will be racism.

But I don't see BSAMS or rex arguing that racism doesn't exist. The point they are making is that, when a "black" man has at least a 50/50 shot of being our next president, it discredits, if not disproves, the old argument that racism is so powerful and pervasive as to be serious stumbling block to people's success.