this has been happening in a lot of places. we see people going on rampage even when there is an accident on the road or a murder or any such incident.
basic problem is that the grievance settlement mechanism everywhere is so bad, that people feel that there is going to be no justice.
so, whenever there is any such incident, people want to settle the issue then and there.
this is definitely not a solution, but then, whom do you talk to when there is a mob ?