They were also targeting separate people for the camps rather than big groups of people. Killing centers are where most were murdered by suffocation with poisonous gas, executions, and shootings. When the prisoners were suffocated with poisonous gas, they were sent to gas chambers and were left there until they stopped breathing. Gas chambers are where most of the Jews died. When the prisoners went through shootings, if not all, then most of the other prisoners in that camp had to watch. The prisoner that was being punished had to stand in front of a wall while everyone was watching before they got