Senator McCarthy was a war hero who turned into an egomaniac who used people's fear of communism to gather enormous power. He succeeded in destroying the reputations and the careers of many innocent people while failing to apprehend any subversives.
Which innocent people had their careers ruined by McCarthy?
Owl_Eagle(If what I just wrote makes you sad or angry,
Owen Lattimore?
Basically, the House Committee's hearings made plain that many departments of government and media organizations were riddled with Communists and Communist sympathizers. They hide and desembled, but they were proven to be there, both then and by the evidence uncovered after the fall of the Soviet Bloc.
McCarthy, who was an extremely popular Air Veteren politician, over reached subsiquently and his personal failings were used as a strawman to make it appear that the vast communist exposures were a fiction.
In truth however, the communists and their agents and proxies were actually guilty as charged in the vast majority of cases and only a small percentage were uncovered then and the Verona Files from the fallen Soviet bloc make that clear.