Almost a dozen people held a vigil outside the Gowanus Houses in Brooklyn on Sunday to remember children slain by police officers. The vigil occurred three months after police gunned down 12-year-old Tamir Rice in a park in Cleveland while playing with a fake gun. Surveillance video shows that the police officers involved in the shooting made no attempt to administer first aid to Rice while he lay bleeding in the ground. Rice died of his injuries the next day. One of the people attending Sunday’s vigil was Nicholas Heyward Sr., whose son, Nicholas Jr., was fatally shot more than 20 years ago by a police officer in the stairwell of the Gowanus Houses while playing cops and robbers with friends. He was only 13-years-old. His toy gun had a bright orange plastic muzzle to identify that it wasn’t a real gun and friends said that they heard him tell the officer “we’re playing” right before he was shot and killed. Watch the video below to see what Nicholas’ father and others had to say at the vigil.