The Crucible is a play written by Arthur Miller in 1952. This was a time during which the fear for the growth in power of the Soviet Union was spreading in America.
What Miller is trying to say in The Crucible is that he is against condemning others with no legitimate reason. He mainly criticizes the government. At that time, the government was persecuting those that were accused of having Communist ties. The government was trying to stop the spread of Communism and so they resorted to many unjustifiable and illegal actions.