The US civil rights movement would probably still see a significant amount of progress, simply by swaying public opinion through great orators like Dr. King, but I was only positing that a superficial reduction of non-violent activism would take place. I mean, people would probably still assemble for peaceful protest marches, but maybe there'd be less shows of civil disobedience (like sit ins, boycotts, etc). It's hard to gauge how much influence Gandhi and his colleagues had in promulgating the idea of nonviolence as opposed to the utility of nonviolence. I think the idea was out there, but the Indian independence movement really illustrated the effectiveness of the whole thing.