I don't care about the problems of white people or of men
Why don't you care about their problems?
I think white people (most of them at least) are brainwashed by the media
Making negative statements about an entire group of people is pretty much racism. Just because somebody is a certain race does not mean that they are going to be a certain way. Everyone is their own person, and it is wrong for you to assume negative traits on people you have never met.
White liberal activists think I'm racist because I believe in facts, which is stupid.
They're right in thinking your thoughts are not appropriate. You need to meet more white people so you will realize how wrong you are.