tell it to all the blacks who did nothing during slavery.
Well, sir, I never thought of it that way. Thank you for that. I love new ideas.
I take it your point is that if taken literally it's blaming the victims of slavery for slavery. Well, I agree that this is a silly thing to do. On the other hand it's also kind of true. The French Revolution started in the cities for a reason: when enough people with the same idea got together they hit critical mass. It's simply not reasonable to try to start your own little revolt. So, I agree that the quote is too simplistic. Perhaps the nuance would be if you are not the one being oppressed and you are opt for neutrality, you are choosing the side of the oppressor.
Then again, maybe that's what that quoted passage was actually saying, and you are disagreeing with your own interpretation of a quote out of context. Or, you know, maybe that author was writing to the oppressed. I have no idea. I just thought your point was so interesting I should spend this much time on it.