It's unlikely that anyone would organize late night thrill walks through Auschwitz........
I'm afraid i'd say give it time on that one. Once the war is well over 100 years ago and tourist numbers are dwindling ... I bet someone will come up with the idea of 'The Midnight Mengele' experience.
People already go to gawp and take selfies of themselves in front of the gas chambers, it isn't that big a step.
I was thinking about JtR, and I think someone has already made this point, but i think its really true. He doesn't seem real. He seems such a product of Dickensian London, the gas lamps, the dark alleys the pea soup fog, a man in a top hat and cape swishing through the streets alongside Sweeney Todd, Ebenezer Scrooge and Sherlock Holmes. He's become a legend, rather than a man and that makes him safe and allows people to view him through the prism of the whodunnit rather than through the prism of the brutal murders. As with any good murder mystery, the victims are pretty much incidental.
I think that, just as studies show people feel less empathy for people who don't look like them, that there is a geographical and race element to our levels of empathy, so too we feel less empathy for people who lived a long time ago. The further back you go, the less empathy you feel.
I guess its a terrible indictment of human nature, but what do we do? Stop teaching the more terrible aspects of history because you know people aren't taking it as seriously as they would if it happened today? Then we forget...
Or, let people explore the aspects of history that interest them - for some people that will be reformations and the works of the great worthies but for others that will be the black death, or executions or the ripper murders.
I think my bottom line is - you can't help what you're interested in, but once you've found something that interests you, learn as much as you can about it so you can come to a balanced understanding of the subject. Plus there's no such thing as bad knowledge.