I think all the businesses affected should band together and file a lawsuit against all local and even national media outlets which both A) Failed to share all the known details of the case; and B) Consistently ran stories which, absent that context, could reasonably be expected to inflame tensions.
I would argue that in intent and effect, many if not most media outlets covering this tragedy—but not this crime—have in effect acted as seditious agents by fomenting and inciting riots.
Until the bastards start paying a price, none of this will stop. It will on the contrary get worse.