ELI5: Explain Like I'm 5

Nazi human experimentation

Nazi human experimentation was when Nazis (a group of people led by Adolf Hitler who ruled Germany from 1933 to 1945) performed dangerous medical experiments on people. These experiments involved putting people in stressful or painful situations, giving them drugs or sicknesses, or doing surgery without anesthesia. These experiments were dangerous and sometimes deadly, and their purpose was to increase their knowledge and power.