A Pennsylvania man has been arrested after allegedly killing his father, before displaying his decapitated head in a gruesome YouTube video while spouting right-wing conspiracy theories. Justin Mohn, 32, is accused of killing his father, Michael Mohn, police told NBC News. While police did not release the victim’s age, public records show him to be 68. Mohn was taken into custody about 100 miles away from the crime scene on suspicion of first-degree murder, abuse of a corpse and possessing an in