The Red Scare was a period of?

The Red Scare refers to two distinct periods in U.S. history characterized by intense fear of communism and radical leftist ideologies. The first Red Scare occurred after World War I, around 1917-1920, fueled by the Bolshevik Revolution and labor unrest. The second, more prominent Red Scare took place during the late 1940s to the 1950s, marked by McCarthyism, where accusations of communism led to widespread paranoia, blacklisting, and violations of civil liberties. Both periods significantly impacted American politics, culture, and society.