We aren't all racist. I don't believe in the concept of "race" or "breed". There is no scientific evidence to support it. That being said, we get grouped into categories by threat of violence whether we believe in it inherently or not. Racism exists because enough people are race realists and systematically enforce it through violence to make it a problem.

Ignorance is the problem, not racism. Ignorance is what is behind the problem of racism. A statement like "we are all racist" is in itself ignorant. A more accurate statement is "we are all ignorant" and that is a statement I would agree with. While we are all ignorant, we aren't all ignorant in the same ways, for the same reasons. Race is a particular ideology, but there are others.