Answer:
McCarthyism.
Step-by-step explanation:
Miller used the play as a criticism of McCarthyism. "The Crucible" is about the witch-hunt and the trials that took place in Salem in 1692. In this play people cared about other people's business and being accused of witchcraft was the most dangerous sin. To avoid being hanged people accused others. Miller compares these witch trials with the ones that took place during McCarthy's time in the U.S. People feared being accused of having communist ideas. Miller himself was prosecuted and convicted.