Even better to know:

The star player of the team (Brandon Miller) provided the murder weapon. Not only that, but he drove the murder weapon to the scene knowing that it would be used in an existing/ongoing altercation. Miles had called Miller and asked him to bring the gun because some other people weren't showing enough respect (which implies that brandishing/using the gun would fix the lack of respect).

The coach refused to kick the star player off of the team.

Rather than reprimand the star player, the coach has helped line up armed guards for him, since there are some people who understandably want revenge for his role in the murder of that young woman.