"Africa should go back to Pangea."

I support people who fight for what they are passionate about, basically people who give a shit about something. Although, in this case, I see a difference between passion and anger. People and places evolve. The same as how Africa cannot go back to Pangea, whites/blacks/etc cannot go back to their homelands because neither those places nor the people involved truly exist.
I see it in similar terms (but in the opposite direction) of an economic great that once said, "We're all dead in the long-run." Angry people die, and then new people that are angry about new things take their places. Avoid the angries until you/they die.