Impact of McCarthyism in the United States. McCarthyism was the period in the late 1940's and early 1950's when radicals were removed from every part of the US society. Senator Joe McCarthy from Wisconsin blamed several political affiliates of associating with or being communist. McCarthyism succeeded in separating left-wing ideas (and their long history in the working class movements) from American Society. Truman passed the loyalty Act in 1947 which forced government workers to sign anti-communist …showed first 75 words of 880 total…

…showed last 75 words of 880 total…Ferguson ruling that had set the "separate but equal" precedent. In 1955, Rosa Parks an African American woman in Montgomery, Alabama, refused to give up her bus seat for a white passenger and move to the back of the bus. Rosa was arrested and this sparked a 382 day boycott on buses and the beginning of the civil rights movement. The next night, 50 leaders of the African American community met. Among them was Dr. Martin Luther King.