For civil rights there will almost certainly be a 1945-55 question, so why is everyone saying its between peaceful protest and black power? The early period is so easy, all they can ask is either 'do they make progress' or 'why do they make progress'.
I'm only revising for Vietnam as they will always ask a question on vietnam but they may not for Korea, and Korea is harder anyway. I think they will most likely ask 'why the US withdrew from Vietnam' or 'why they couldn't the defeat communist forces'.