“Two facts about this tragedy remain clear: First, in the middle of the night, this child was in contact with an adult who had a gun, and then ended up being shot and killed by a police officer. Second, there are too many young people in our city, boys and girls alike, who have been left vulnerable by systemic failures that we simply must fix,” the mayor told reporters, citing a legacy here and across the country of easy access to illegal guns as well as police violence, particularly in Back and Latino communities.