Ok, let’s talk.
If you’re going to say x marginalized group is oppressing y marginalized group, you are being prejudiced towards x marginalized group.
Example: if you say, “Black culture is homophobic.” You are being racist. The entire culture that we live in is heterosexist. Why would you single out black people other than racial prejudice?
However if you are a member of marginalized group a, and you say that your community needs to deal with it’s problems oppressing marginalized group b, then you are not being prejudiced towards group a. You are trying to fix problems within your community.
Example: If I say, as a trans woman, “we need to deal with the racism in the trans community.” I am not saying that all trans women are perpetuating racism, I am saying that we’ve got problems that need fixing. If someone who isn’t a trans woman says, “trans women are racist.” they are being transmisogynistic. The entire culture is racist. Why are they singling out trans women other than prejudice?
I may expand on these ideas later, but that’s all for now.