Full Title: Woman Facebook live-streams her dying boyfriend seconds after he is shot four times by a cop as his mother says police kept her from her son's deathbed and claims the girlfriend is now missing =============================================== The devastated mother of a black man who was shot dead by a cop and whose death was live-streamed on Facebook by his girlfriend says she was prevented from seeing him on his deathbed. Valerie Castile, mother of Philando Castile, 32, who was shot in Falcon Heights, Saint Paul, Minnesota on Wednesday night, also claimed they have been unable to locate Diamond Reynolds,...