During Truman's presidency he was faced with forces of intolerance within United States society. These were principally the "Red scares" of the 1950's, hostile attitudes towards Trade Unions and racism, particularly in the South. These forces of intolerance were motivated by both Truman himself and the Republican party for political reasons, but for different aims. Truman's intolerance could be seen as positive, while the Republican's intolerance was more extreme and motivated for party advantage. The intolerance of the "Red scares" was perpetrated by the Republican party and in particular, Senator Joseph McCarthy. McCarthy made claims that there were communists "kn