I've been to two of the seven - Papua New Guinea and Zimbabwe - and not felt particular danger in either. The Southern Philippines, where we were accompanied everywhere by a guard with an AK47 over his shoulder, and Nepal, where armed soldiers and rebels were everywhere, were much more threatening.
Those are not pretty sites for sure .I visited there many years ago .... well to date myself , it was when the Berlin wall was still in existence . That was also a heartwrenching experience . But for sure Auschits was pretty grim .
When I was in Israel last year we went to their museum and they had all the holicost pictures and information and even live testimonies . I could not take it all . I was very distraught by it all .