Which statements about the red scares of 1920s is true?

The Red Scares of the 1920s were characterized by widespread fear of communism and radical leftism following the Russian Revolution. The first Red Scare (1919-1920) led to government actions like the Palmer Raids, targeting anarchists and leftist activists, often based on little evidence. This period saw a significant rise in anti-immigrant sentiment, as immigrants were frequently associated with radical ideologies. Overall, the Red Scares reflected societal anxieties about labor unrest and the perceived threat of foreign influence in the U.S.