Genocide memorials

An interesting article from the BBC News Magazine about genocide memorials, and why people visit them. As a minority whose ancestors suffered persecution, I personally feel an obligation to bear witness (thought I don't think I could bring myself to visit Auschwitz, Treblinka, or other concentration camps). But equally, I wonder how much sites of mass murder relate in the public consciousness to other forms of dark tourism, such as visiting cemeteries, catacombs, and battle sites. Any thoughts?