Question, part 1. Is this our Berlin Wall moment? part 2. Was McCarthy right after all?

Yes. McCarthy was right. Google " Bezmenov", a former KGB officer and propagandist who defected to the US. The goal was not to convert America to Communism, it was to destroy our society. The beauty of their plan is that all they had to do is start it and it would propagate on it's own after that.