He is being criticized for filming a video in a gas chamber for personal gain and notoriety (which he is receiving - not the good kind though).  His actions are being condemned.  Deservedly so. 

From the article:  " A post on the Auschwitz Memorial’s official Twitter account said Tuesday that a former gas chamber is not a stage but a place where there should be respectful silence. Later Tuesday, it posted a photo of the entrance sign to that building, asking visitors to “maintain silence here.” " 

Sometimes it is OK to join in criticism of a Republican - even from a passionate Republican like yourself.  :)