During the 1920s, the United States experienced social unrest due to strikes, the Red Scare, and anti-immigrant sentiment. The Red Scare led to raids targeting radicals and communists, while new quotas severely restricted immigration. Additionally, the Ku Klux Klan grew in popularity, Prohibition led to organized crime, and the Scopes Trial exposed religious intolerance. Despite women gaining the right to vote, traditional gender roles remained enforced. The Harlem Renaissance emerged as an artistic movement among African Americans.