Regarding the Auschwitz-Birkenau photos.
Of course you should take them, and post them. I personally feel that every schoolchild should be taken to this site if it is possible to do so. I have not (yet) been there, but understand it to be a deeply moving experience for all who have.
The photos are excellent, and I wish you would post more. Although they are not 'original'
per se, it is strange that images of this place seem to defy being categorised as cliched. They cannot fail to move in their raw starkness, and indeed in the very fact that they are so horribly familiar.
From a technical point of view I wonder is a slight boost to the contrast might be in order - I don't know if you use PS, but a pull-in of the levels. They are just a bit flat here.
You undoubtedly know this, but the wonderful landscape photographer Michael Kenna carried out a lengthy project on the concentration camps in the 1980s and 90s. They are amongst the most moving photographs I have ever seen.
http://www.michaelkenna.net/gallery.php?id=19