Berlin Wins 1936 Bid

In 1930, Berlin was appointed the Olympics being held in 1936. This was before Hitler came to power, and no one knew he would host the Olympic Games. But once he gained power, he saw the Games as perfect opportunity to exploit the efficiency of Nazi Germany to the world ("Hitler's Rise").
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The Dachau Concentration camp grounds from an aerial view.

Dachau Camp

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Dachau inmates/prisoners, starving nearly to death
In 1933, the first camp established by the Nazi's was the Dachau concentration camp. It was a gated area with nearly 4,800 prisoners, and in 1937, the number rose to 13,260.  Heinrich Himmler, as police president of Munich, officially described the camp as “the first concentration camp for political prisoners" ("Dachau"). An electrified barbed-wire fence, a ditch, and a wall with seven guard towers surrounded the camp. German physicians used the prisoners as test subjects for medical experiments. They would test new medications on them, malaria and tuberculosis experiments, hypothermia experiments, and as a result of all these experiments, many of them died, or were permanently crippled. They were also forced laborers, and had to build roads, work in gravel pits, and drained marshes ("Dachau"). The Dachau concentration camp was the model camp for the rest of the concentration camps to come. 
This was controversial because the Nazi leaders had power over all those who weren't Nazi's. Innocent lives were taken, or brutally worked harder than natural. Those who weren't Nazi's believed it was  unfair, and made a lot of people upset.