What is this Phenomemon?

The behaviour of people in Karandeniya when their much loved doctor was murdered and behviour of people when a mother and daughter were brutally murdered are unique.I am not insenstive to the extent to label these events as people taking law into their hands.
There is a certain amount of personal sacrifice in their behaviour.Handling them as prescribed in law will not be a solution.They seem to be bring out some social disparity into light.Taking them to Courts of Law is like penalising a person for attempted suicide.Attempted suicide is a humble cry for help.