The sun shines behind the cloudy sky and the crematory during the international Holocaust remembrance day at the Nazi concentration camp Buchenwald near Weimar, Germany, Monday, Jan. 27, 2014.

Jens Meyer / AP

The sun shines behind the cloudy sky and the crematory during the international Holocaust remembrance day at the Nazi concentration camp Buchenwald near Weimar, Germany, Monday, Jan. 27, 2014.