This is a rather disturbing experiment done by Stanley Milgram where normal people are asked to give electric shocks to another person when they answer questions incorrectly. The shocks started small and increased upon each wrong question all the way up to 450 volts (enough to kill a person). Shockingly, the majority of people went all the way to the end of the experiment. Had it been real, they would have killed the other person. Proceed in watching these with caution.
Part 1