Because the systems of oppression are complicated.
Really, it’s great. We’ve all got a lot of catching up to do though. You shouldn’t expect a Person of Color to nicely educate you about how your privilege has been killing them. There are plenty of resources for you to learn on your own.
A guide to challenge your whiteness (if you are a white person) and actually help People of Color. In reading through it, I’ve noticed that some of my behavior is problematic and I’ll be working on changing it. As I make these improvemen, I’ll likely find other problematic things that I need to work. Truely fighting racism requires continuously examining your own whiteness and doing things to counteract it.