Terrifying video of a hulking 6-foot-6-inch tall man attacking a museum employee in the gift shop and threatening to kill her has been released. In the footage, the giant takes a woman hostage at a museum, as terrified children watch. He had her in a choke hold and held a knife to her throat. Visitors and bystanders pleaded for him to let her go. She ran for her life, and the 36-year-old assailant was shot dead by police in the parking lot.