I've long known that WW2 was the bloodiest conflict in all of history, but I've never really seen a good comparison. Until today.
Warning, this video is a little soul crushing.
http://www.fallen.io/ww2/
I find it interesting that even with all the atrocities commited since the war the general death tolls since then have been drastically less. I don't know if this trend will continue, or like with WW1, which was the first major war since Napoleon, will just be a new powderkeg that is going to explode into another massive war.