All this nonsense about army versus people etc etc is just that, nonsense. Verdicts should not depend on what people in a certain community might think of the verdict. Rioters and looted are not some organized insurgency, they are just criminals taking advantage of an event and community anger to steal and destroy. If people riot, oh well, arrest as many as possible while maintaining the safety of those not involved as much as possible.
I think the verdict probably makes sense. That's exactly what the involuntary manslaughter charge is supposed to be for, situations where you did something you should not have, ended up killing someone in the process, yet didn't ever intend to kill someone.