What was the basis for Joseph McCarthy’s accusations and investigations?

4 answers

Not much. He was paranoid about anyone who thought differently than he did.
He was crazy but thought almost everyone was a subversive Commmunist. There was little real basis. Before world war two many intellectuals and workers all over the world were fans of Marx's economic theory. McCarthy jumped to the conclusion that if someone had a history of being a Socialist or heaven forbid a Communist even if it was back when Communist Russia was our ally in world war two or before, that person was a traitor to the post war USA. As a result he persecuted many people who were American patriots. When he went after the military he finally got in trouble.
thank you sooo very much!
You're very welcome.