Prejudice arises when a large number of people decide to believe and promote an incorrect and harmful concept about a group of people. Within this context, we can say that MacCarthy was not the only one to blame for the Red Scare of the 1950s.
We can arrive at this answer because:
MacCarthy promoted controversial speeches and spurred the indictment and punishment of people suspected of communism. These speeches were stimulated by the media, causing unjustified prejudice and a wave of oppression and unfounded accusations.
In addition to MacCarthy, other senators and politicians embraced this prejudiced concept against communism and encouraged laws, speeches, comments, and other activities that gave Red Scare strength. Some of these politicians were Richard M. Nixon, Karl E. Mundt, Patrick A. McCarran, among others.
More information about McCarthyism:
https://brainly.com/question/17606205