What techniques did Joseph McCarthy use to accuse people of being communists?

Joseph McCarthy employed aggressive tactics such as making unsubstantiated claims, often using vague or broad accusations that lacked concrete evidence. He utilized sensationalist rhetoric and fearmongering, which played on the public's anxieties during the Cold War. Additionally, McCarthy conducted highly publicized hearings that pressured individuals to testify against others, creating an atmosphere of paranoia and distrust. His methods often disregarded due process and the principles of fair investigation.