When a C is actually bad

In How to Feel, Brooke acknowledges that racism is bad. Are there other types of meanness that are also bad? It seems as if we can clearly define physical and sexual abuse, and label them as bad, however emotional abuse seems like a tricky thing. I’d call it bad, but it seems harder to pin down in a model.
Then, if we agree something is bad, unacceptable, etc – then what are we to do?