The term McCarthyism refers to the practice of making public accusations of subversion or treason, usually of being a Communist, without proper evidence.
The term originated in the United States in the 1950s when the American politician Joseph McCarthy, who was a U.S. Senator at the time, <u>accused many Americans of being infiltrated Communists, even though there weren't unsubstantiated charges, and which resulted in a series of investigations and hearing in an effort to expose them</u>. The accusations and investigations were in America's spotlight for a while.
Im not sure if i need to complete this either but im actually getting a lot of po!nts answering old questions sorry if im spamming too much...
For Germany? It would have been 'Sieg Heil'. Hail Victory in English. However there were many different fascist nations, so please specify.