Following World War I, the First Red Scare caused
O A. a national mistrust of Hollywood movies and many in the entertainment industry.
OB. the United States to enter into a mutual-defense alliance with the capitalist countries of Europe.
OC. prominent anti-communist Mitchell Palmer to be appointed to the House Un-American Activities panel.
O D. the US government to infringe on freedoms of the American people guaranteed in the Bill of Rights.