This gallery of pictures of mass graves is very much like the IotD of an Iraqi grieving at a plastic bag of remains.
If you have the bandwidth, it is one of those things that's "very important to look at", although you may wish you hadn't.
And when you get to the bottom of the first page, and pause over the "next" link, consider that you have 48 pages to go.
http://www.9neesan.com/massgraves/