Hitler's Concentration Camps

http://www.cvce.eu/en/obj/nordhausen_concentration_camp_germany_12_april_1945-en-d5f542be-c4e0-40c2-997e-eff778ff710b.html

http://en.m.wikipedia.org/wiki/Nazi_concentration_camps

http://www.zbsource.com/nazi-concentration-camps-gas-chambers.html

http://www.nebraskastudies.org/0800/stories/0801_0608map.html

Concentration camps are where Hitler imprisioned many people including German and Austrian Jews, and other political prisioners. He had them living in very harsh living conditions.