McCarthyism is the political action of making accusation of disloyalty, subversion, or treason without proper evidence after Cold War. This is born by increase in fear of communist influence on American institutions and spy of the Soviet Union. Under anti-communist pursuit of the Senator Joseph R. McCarthy, the U.S government accused of people being suspicious and they are investigated so badly despite inconclusive and questionable evidence. Soon later, it has become unconstitutional.
This is image from Youtube. It is hearing of McCarthy about anti-communist.
