I am actually happy that Joseph McCarthy existed in history. He won election to the senate with an idiotic campaign where he claimed that he knew communist supporters in the United States. McCarthy’s downfall in 1954 showed that Hey! The people of the United States are not that oblivious to stupidness. I think that if McCarthy didn’t exist there will have been many other people taking advantage of the anti-communist hysteria for their own selfish benefits.
McCarthyism is practicing the accusation of disloyalty without any reason against alleged communists during 1940 to 1950. During the time, the senator, McCarthy and House Committee on Un-American Activities accused over thousand American people without any proper evidences. And the agencies primarily suspected governmental employees, actors, scientists, and educators. This suspicion created a kind of threat. People feared being accused and most of them lost their job and even imprisoned.