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In the 1940s and 1950s, Americans had a cultural hysteria about the Soviet threat.
Americans were very worried about the threat of Communism in the 1950s. This fear was so prevalent at the time that the 1950s are often called the time of the "Red Scare."
Communism
The 1950s was the prime time for McCarthyism. It was considered a witch hunt against communism.
There are very few symbols in 'The Crucible'. Regardless, it could be used to symbolize how bad Communism paranoia was in America in the 1950s.
The threat of communism was spreading through the United States in former countries
With military force.
Communism and the Red Scare
Joseph McCarthy
McCarthyism
Joseph Raymond McCarthy.
The US was worried about other countries becoming powerful. No connection to Communism (a classless stateless society based on production for use).