Do dogs know what racism is?

Racism is a learned activity just like anything else. You are not born a racist, you become one through conditioning. So yes you can teach a dog to be racist.

i’ve met a dog that hates black people.

I've seen a dog that attacked blackies on sight.

Of course not, they have too much sense to be concerned about such dangerous nonsense

Do you want a dog to repel black people? That'd be pretty racist

no

white powqrer

I think the dogs just pick up on the vibes of their people.

If you train them from pups they will hate whatever you trained them to hate.

My dog hates strangers in general she won't bite them but will bark like crazy.

No, dogs are too pure