As the white parent of white children, I agree. If anything, I’d argue that it’s MORE important. Black children will, unfortunately, see plenty of examples of racism in their lives. Meanwhile, it’s easy for white children to not see racism because it doesn’t affect them personally.
It’s like how I was just arguing with a Christian friend of mine. He’s of the opinion that antisemitism is rare to nonexistent in the US. I told him, as a Jew, that it’s prevalent, growing, and scary. He wrote me off as being hysterical because he doesn’t see it. Well, of course he doesn’t see it. He’s not the one being threatened by the Nazis waving swastika flags.
It’s important to know where your blind spots are and pay attention to what’s happening there.