Violence erupted Sunday at a Burbank, California, Costco after an elderly shopper reprimanded a 24-year-old man for allegedly eating too many Nutella samples. According to police, Derrick Gharabighi punched the 78-year-old victim in response to the allegations of hazelnut spread hoarding.

On Friday afternoon, two narcotics officers with the Burbank, Calif., police department reportedly showed up at Tom DeVocht's door on an anonymous tip—complete with dubious photographic evidence—that the former Scientology executive was selling drugs in the area. The documentary Going Clear, in which DeVocht appeared…