Yuri Bezmenov Tried to warn the USA. We were being brainwashed into communism.

Yuri Bezmenov was a high level KGB psychological operations chief who defected in the late 1970s. Once here he began trying to warn America that they were being brainwashed by leftists in Universities and media.
Although there are quite a few videos of him giving lectures around the country. You can google those if you like, this interview of him breaks it all down in short work.