Warning this video is very dark!! Prison is supposed to be punishment enough, but the unfortunate inmates on this list suffered in cruel and unusual ways, .br 15 Disturbing Human Experiments That Actually Happened. From disturbing medical experiments performed on children, to the most horrific human .br We take a look at some of the most evil human experiments ever performed by humans. These 5 experiments look at some of the most evil, disturbing things that .br The CIAs MKULTRA is definitely the most terrifying psychological experiment, mainly because of the amount of people involved and the amount of subjects .