VIDEO : Father of 'Slender Man' Attacker Condemns Film For Popularizing Tragedy

The first trailer for the upcoming horror film Slender Man just hit the internet today, along with some backlash from the parent of a young girl who believed in the internet legend so strongly that she attacked one of her friends. The supernatural entity was created back in 2009 for a Photoshop challenge on the Something Awful forum in which users were encouraged to take seemingly mundane photos and manipulate them to create a horrifying image.