Obviously since you wrote sarcasm you are saying that it can be racist even though some black people supported it. Actually in this case some black Congressmen helped write it, which is deeper than just supporting it. So if harsh sentences for crack are racist despite some black people writing that law, it follows that those black people must also be racist. After all, do non-racists write racist laws?

Or perhaps you just wrote the sarcastic comment without really considering the logical implications of what you wrote. Kind of a knee-jerk left-wing reaction sort of thing. After all, it is possible for a piece of legislation to be wrong, bad or poorly thought out without it being racist.