A photo taken by a shocked onlooker of a visitor posing inappropriately at the site of the Auschwitz concentration camp has gone viral, prompting the museum to issue a warning. The picture showed the smiling tourist sitting on the railway tracks that transported more than a million Jews to their deaths. In a lounging position her hand was in her hair and her head was tilted to the sky. A man crouched down on the tracks in front of her taking the picture. “Today I had one of the most harrowing experiences of my life. Regrettably it didn’t seem everyone...