Don't confuse racism with the actions a racist takes using their power and influence.Racism is "I don't like black people they're all lazy, so I'm going to pass laws and enact policies to make sure they cannot compete economically.
racism itself is a doctrine or set of beliefs that one's given race is superior to other races and others are inferior because of race. some that adhere to that have power ie Donald Sterling and some that adhere to it live in a ran down trailer park in Oklahoma.
one could be a powerful racist or a powerless racist. impact doesn't negate existence.