<P> The second Red Scare occurred after World War II ( 1939 -- 45 ) , and was popularly known as `` McCarthyism '' after its most famous supporter , Senator Joseph McCarthy . McCarthyism coincided with increased popular fear of communist espionage consequent to a Soviet Eastern Europe , the Berlin Blockade ( 1948 -- 49 ) , the Chinese Civil War , the confessions of spying for the Soviet Union given by several high - ranking U.S. government officials , and the Korean War . </P>
<P> The second Red Scare occurred after World War II ( 1939 -- 45 ) , and was popularly known as `` McCarthyism '' after its most famous supporter , Senator Joseph McCarthy . McCarthyism coincided with increased popular fear of communist espionage consequent to a Soviet Eastern Europe , the Berlin Blockade ( 1948 -- 49 ) , the Chinese Civil War , the confessions of spying for the Soviet Union given by several high - ranking U.S. government officials , and the Korean War . </P>
who was best known for his involved in the red scare following wwii
who was best known for his involved in the red scare following wwii
Joseph McCarthy
Joseph McCarthy