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Abnormal behavior thought to be brought on by possession curable only through trephination which is drilling a hole in the skull to remove the demon.
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The Tuskeegee Syphilis Study was a study conducted on African American men to study disease in blacks and racial differences in the clinical manifestations of syphilis The men were not told they had syphilis and also were not treated and during the 40 year experiment many died and spread it to partners and their children..
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Nazi concentration camps in Germany were made to rid the country of Jews, blacks,homosexuals, and others not born of pure Aryan race. The concentration camps were really death camps and the torturous experiments were fatal most times and premeditated.