The physical and mental torture of southerner has been really brutal.
Step-by-step explanation:
The treatment of southerner slaves in US had been very brutal.The torture or punishment varied time to time and by place.The physical torture generally included whipping and abuse. It just became a routine punishment. On large plantations, slaves supervisors were authorized to whip them brutally.
Other form of physical exploitation included third degree.They have been tortured on mental level also. They were mentally depressed as deprived of food and threats to death. Police has used electroshock, suffocation by plastic bags and had done excessive level of beating.