ettore,
Would a more swift and demonstrative response of the commercial aviation authorities and justice after a crash help to calm down the feelings of grief and revenge?
While a more assertive official response might not mitigate feelings of grief, it might at least help to build up more confidence with those involved that the "truth" will be found, shortcomings and failures be disclosed and adequate measures be taken as soon as possible to avoid similar tragedies in the future.
The time victims usually have to wait for (financial) compensation (which can never compensate the loss of family members, of course), and the sheer number of denials, of attempts to blame others, the usual delayal tactics by lawyers, insurance companies and institutions directly involved (airline or ATC companies, aircraft manufacturers etc...) is often outrageous. It is good and important to attempt to get all the facts right, but a swift and assertive effort to care for the victims is often missing.
A very tragic chain of events, indeed, with five more victims now.