Something stinks here. Why aren't the punk's buds charged with murder. It is my understanding that anyone involved in a crime resulting in murder, all are equally guilty of said murder.
Because the DA wants the shooter. If they testify against him, they'll get reduced charges. If the DA goes to convict all of them, then they have nothing to lose by lying and ten thousand relatives will come out of the woodwork to swear they were home play scrabble the night of the murder.