Markxism Brainwashing in America

Reviewing of a old video I watched years ago of a interview of a former KGB agent who defected to America and told of how Russia tactics were used to demoralize and destable a country and convert them to a markist society. I found this interesting cause after world war 2 we had the era of McCartherism when we had Markist recruiting our collage student across the nation and many people in the film industustry were arrested and charged for treason. It when went away. So we thought. But the Russia have have always said that America would be destroyed from within and it would start with demoraliztion financial and so on.