Poland's President Bronislaw Komorowski (R) and his German counterpart Christian Wulff (C) pass the main gate of the former Auschwitz death camp, in Oswiecim on January 27, 2011. Polish and German presidents went to Auschwitz to mark the 66th anniversary of the liberation of the Nazi Auschwitz-birkenau death camp. The German and Polish presidents urged global vigilance to prevent crimes against humanity as they marked international Holocaust remembrance day at the former Auschwitz death camp. AFP PHOTO / JANEK SKARZYNSKI