Red scare difference between 1920 and 1950?

The Red Scare of 1920, often referred to as the First Red Scare, was primarily driven by fears of anarchism and communism following the Russian Revolution, leading to widespread paranoia, labor unrest, and the Palmer Raids. In contrast, the Second Red Scare of the 1950s was fueled by Cold War tensions, nuclear fears, and the rise of McCarthyism, which sought to root out alleged communists in government and society. While both periods involved significant anti-communist sentiment, the 1950s saw more institutionalized efforts to suppress dissent and a broader cultural impact, including blacklisting in Hollywood.