Final answer:
In the 1950s, Senator Joseph McCarthy accused people of being communists without providing evidence.
Step-by-step explanation:
In the 1950s, Wisconsin Senator Joseph McCarthy accused people of being communists during the anti-communist movement known as McCarthyism. McCarthy made unsupported accusations without providing evidence, claiming to have names of communist sympathizers in the government. However, he never produced any names and the accuracy of his accusations was questioned.