Hitler's ultimate goal was the "Final solution", and his plan was to have all of the Jewish people exterminated. They carried out their plan by setting up concentration camps. Concentration camps were the places that the Nazis took the Jews and other unwanted people to work and die. When the Jews got off the trains to be "examined", a man would either point with his left or right thumb. One lead to the concentration camp, the other lead to the gas chambers where all the unfit people were taken. The Nazi's first killing method just included shooting the people with a gun. Then they started leaking carbon monoxide into the shower rooms. The Nazis then evolved a way of deporting the Jews from the ghettos onto a truck to a forest and set off exhaust fumes in the back. Finally, they came up with Zyklon B, which was the most effective killing process. Once it hit the air, it would turn into lethal gas. When the huge gas chambers were created, this was their top killing method with a rate of 4,400 people poisoned per day.
http://m.youtube.com/#/watch?v=-tGwjwK9pIM
http://m.youtube.com/#/watch?v=w5WXIF67J2w
http://m.youtube.com/#/watch?v=-tGwjwK9pIM
http://m.youtube.com/#/watch?v=w5WXIF67J2w