Both of these events have similarities is by displeasure. During the Salem Witch Trials, Abby abhor Elizabeth Proctor and the wife of the man that he loves, which concomitant Abby inculcate Elizabeth of practicing witchcraft and interact with the devil. In McCarthyism, rage is shown when Joseph McCarthy arraign people being communists. Anyone who reveal their freedom of speech was labeled a communist just because people inculcate them being one. There was so much rage in this time that people let it consume them and take over.
The Crucial and McCarthyism are indistinguishable