What countries were in the red scare?

The term "Red Scare" primarily refers to two periods of anti-communist sentiment in the United States. The first Red Scare occurred after World War I, primarily affecting the U.S., while the second, during the late 1940s and 1950s, coincided with the Cold War and involved heightened fears of communism globally, particularly in the U.S. and allied nations. Other countries, such as Canada and the United Kingdom, also experienced some degree of anti-communist sentiment during these periods, but the focus was predominantly on the United States.