The conditions that the victims of Nazi Concentration Camps had to live in. Crowded living space, undernourishment, dirtiness were just a few things that these people had to live with daily.
The Holocaust, lead by the Nazi leader, Adolf Hitler, was started in 1933 when the Nazi party and Germany had decided to start their "Final Solution". The Holocaust, meaning "sacrifice by fire", was a push for the death of those that the Nazis had deemed "racially inferior" and was a threat to Germans, who were deemed "racially superior". This lead to the death of about 6 million Jews, and 5 million other combined races. It is not known exactly as to why the Jews had been targeted and killed by the Nazis, but there have been many claims as to how Hitler had resent and hatred towards the Jews as he had been growing up.
In concentration camps, many people were sentenced to death by the Nazis. The most common method used and the most "effective" method deemed by the Nazis were gas chambers. Those were were deemed to be useless or undesirable were forced into chambers in which gas was pumped into, and the people would await their death by breathing in the fumes. Other methods of death used in the Holocaust were mass shootings, as we can see in the picture, and gassing trucks.
The Nazis did not only target the Jews. There were many other races and cultures that were targeted throughout the Nazi regime. The Nazis targeted those who were mentally ill and physically disabled and went under the impression of them running a "Euthanasia project". The Nazis and the government officials did not only target those who were Jewish or physically or mentally ill, they also targeted and killed anyone who posed a threat to the Nazi regime, Soviet Russia's captured military, any Polish or Soviet civilians and anyone the Nazis had deemed to be unworthy of their "superior" race. The government and police officials would target anyone who posed a threat so that they would not be overthrown by anyone and to make the Nazi regime last longer, and the Nazis would target anyone who did not fit into German's "superior" race solely because of Hitler and Hitler's blaming of how it was everyone else's fault that Germany was suffering.
The Nazis had many ways of mass murder and genocide. Anyone the Nazis deemed to not fit into the superior race would be put into "ghettos"--places that were crowded and run down, everyone would live in close quarters, often very packed with people with many families living in one household, and it would all be controlled by Nazi organizations. The Nazis would load thousands of people daily into trains and trucks and take them into concentration camps, where they would be forced to live in even worse living environments and be forced to work until they would die of exhaustion or other methods. In the concentration camps, they would often get beat by the officers in the camps, and fed very little and have very little rest time. Each day, they would feel the fear of getting picked to be shot, or sent into gas chambers. Nazi officials and doctors would often use those in the concentration camps for vivisection projects and live tests on humans.