Repression of the previous ruling class was absolutely necessary, the fact that it went overboard and also targeted comrades is the mistake. If it were possible to have a revolution that made absolutely no mistakes I would sign onto it no question, but I believe that such a thing is idealistic nonsense - and that forswearing all repression of the previous ruling class in order to not accidentally target comrades is far worse, because it takes an essential tool out of the revolutionary’s belt and replaces it with nothing.