A sad video is being circulated online showing a white teenager pulling a gun on an 8-year-old boy and threatening to murder him in a social media prank. The video has allegedly been circulated on White Nationalist websites. In it, the teenager is heard asking the younger boy: “How fast does an****r run?”.The child looks back confused and says that he doesn’t know. The teenager then pulls a gun, and says, “Let's Find Out”.