It may depend on who initiated aggression in the restroom. If the 22 year old from Detroit started it, the two on one video may not be the determining factor.
If the dead 20 year Old from Pontiac started things in the restroom it will probably be a good shoot, but the 22 year Old from Detroit is going to face civil charges from the woman shot, and probably be trespassed by the mall for failing to comply with the No Firearms Policy. At a minimum.
