McCarthyism is a term escribing the intense anti-communist suspicion in the United States in a period that lasted roughly from the late 1940s to the late 1950s. This period is also referred to as the Second Red Scare, and coincided with increased fears about communist influence on American institutions and espionage by Soviet agents. Originally coined to criticize the actions of U.S. Senator Joseph McCarthy, "McCarthyism" later took on a more general meaning, not necessarily referring to the conduct of Joseph McCarthy alone.