A grieving mother in San Antonio, Texas, has filed a lawsuit over the fatal police shooting of her unarmed teenage son. Fourteen-year-old Derek Lopez was shot to death after hiding from an officer who had witnessed him fight with another teenage boy. The officer, Daniel Alvarado, had previously been reprimanded 16 times, suspended without pay five times, and recommended for termination over earlier incidents. Lopez’s mother, Denys Lopez Moreno, is seeking punitive damages for civil rights violations, supervisory liability and negligence.