>The name clearly suggests that it is treating black people differently from non-black people.

That's not what racism is. And don't bother digging up the 4th definition in some random online dictionary as your "proof". Dictionaries chronicle common usage, they are not the arbiters of meaning. One can understand the meaning of a word by comprehending its usage in culture and literature over the span of many decades. Once you do that you won't be able to claim that racism is "treating races differently".