- The Red Scare which occurred after the end of WW II was caused by many factors including the Soviet Communists acquiring nuclear weapons through stealing US bomb secrets via spies, the cold war with the Communism, some American and British Communist spies working with soviets being discovered, and an invasion of South Korea by Communist. Moreover, American politicians used these issues to instill fear and witch hunt so as to increase their positions or power. Some of the major results of the Red Scare were expatriation or deportation of foreigners and barring the socialists from office.
McCarthy was ...