The one that declared organized resistance by southern states that would prevent racial integration in the south is : Senator Harry F. Bryd
This events was commonly known as the massive resistance, when senator harry unite all white politicians in the state to do a massive campaign about the cause
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Americans were against US involvement in the war, and did not want the United States to get tangled up in European affairs after 1919.
To gather a large population of the people they were against efficiently to concentration camps, usually to clear ghettos without liquidation.