[Kizzy]

I think a murder is an excellent reason for a riot...especially if those doing the murdering are in the business of law enforcement. ..

Protests peaceful or otherwise are a gauge of public feeling, how are the public feeling about this?
Throughout history there have been violent and non violent protests and riots for noble causes, and for things that the modern day take for granted.
They are sometimes necessary. .. when all other avenues have been exhausted. Of course they're not ideal, but can everyone hand on heart say they are never warranted? Imo no.