I think it's worth stopping to ask what we mean when we say racism, otherwise we can talk and argue without getting anywhere. A good quote about this:
"Too often, when people are talking about racism or sexism or heterosexism or any other form of oppression, they’re simply referring to when a person was made to feel bad for or about their identity.
There is absolutely no acknowledgement of wider systems of oppression and power."
Read more here: http://goo.gl/rFGJ89