Why did the city forget about this brutally murdered teen?

Chanel Petro-Nixon was whip-smart, God-fearing and so very beautiful. Called "little princess'' by her adoring parents, she aimed to become a psychiatric nurse. Instead, the straight-A high-school honors student was murdered, strangled by unseen hands, her body dumped on a Brooklyn street, in a fetal position, inside a black garbage bag. She was 16 years...