While certain evil entities like vampires cannot be photographed, human monsters can be captured in their full, foul, inglorious selves. The villains here, ranging from mercenaries to perpetrators of war offenses to lousy kids, all found themselves caught on camera, in some cases belying their own horrible selves by partaking in normal behavior. Just because something looks okay doesn't mean it is, and these people are the exact opposite of okay. If anything, the photos below show that human monsters are the scariest, most unassuming monsters of all.
1947: Rudolph Hoess, Architect Of Aushwitz