The united states’ policy of containment after world war 2 was intended to prevent communism from spreading beyond

The United States wanted to promote future peace and allow European countries to choose their own form of government. ... To protect the United States' role as a world leader, President Truman wanted to prevent the Soviet Union from spreading Communism beyond its post-World War II boundaries.

- "schenck v. united states, case in which the u.s. supreme court ruled on march 3, 1919, that the freedom of speech protection afforded in the u.s. constitution's first amendment could be restricted if the words spoken or printed represented to society a “clear and present danger.” "

- speech aimed to potentially create danger could be banned.

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