You raise a good point that its about power, but I would add it's also a weakness. If your government can't be criticized, it obviously has some weakness. With Marxism, it's pretty easy in a society with non-marxist schools to show children everything retarded about it. I think unlimited political speech is the mark of a strong society, but degenerate public expression should he banned. No more porn sites, gay marches, trannies, etc.