Residents at a Santa Monica, California, apartment building say they're being terrorized by a neighbor shouting obscenities. According to those living in the building, Mark Yaskoweak hurls insults and threats at all hours of the day and night. “Pedophiles! I’ll f*** you up you motherf******,” he says in one video filmed by a resident. Kathi Tomkins told Inside Edition's Chief Investigative Correspondent Lisa Guerrero that Yaskoweak has threatened to kill her multiple times.