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![Jews are forced into boxcars destined for the Belzec killing center. [LCID: 63444]](https://encyclopedia.ushmm.org/images/thumb/eae02616-41b4-4697-9938-c1648fb6ea14.jpg.pagespeed.ce.Ie88eOPs6G.jpg)
Featured Article
Killing Centers: In Depth
![Nazi foreign minister Joachim von Ribbentrop (left), Soviet leader Joseph Stalin (center), and Soviet foreign minister Viacheslav ... [LCID: 91391]](https://encyclopedia.ushmm.org/images/thumb/7e60e917-99fa-4279-bc6b-07a63e679f9f.jpg.pagespeed.ce.aYqt_q0zpf.jpg)
![Jews carrying bundles of possessions before their deportation from the Kovno ghetto. [LCID: 10687]](https://encyclopedia.ushmm.org/images/thumb/1d5950dc-d9a7-47e4-903c-c3c135c46ef1.jpg.pagespeed.ce.kch0_E_deD.jpg)
![American soldiers view the bodies of prisoners laid out in rows in an open field at Ohrdruf, a subcamp of Buchenwald in Germany. [LCID: 38099]](https://encyclopedia.ushmm.org/images/thumb/f1997598-e9d6-426e-bdc6-41d3ff9ccb45.jpg.pagespeed.ce.mYQppyNBc6.jpg)
![Train station near the Treblinka killing center. This photo was found in an album belonging to camp commandant Kurt Franz. [LCID: 35274]](https://encyclopedia.ushmm.org/images/thumb/6650591e-240b-44bd-8cf7-774c8c400c9b.jpg.pagespeed.ce.1N9cTdCkXY.jpg)
![American Olympic runner Jesse Owens and other Olympic athletes compete in the twelfth heat of the first trial of the 100m dash. [LCID: 14523a]](https://encyclopedia.ushmm.org/images/thumb/0623da87-2aa7-4e7b-bec6-b2285030315e.jpg.pagespeed.ce.d8RMmEuUBW.jpg)
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How and why was the Holocaust possible?