In some countries if you ruin the public property you will be fined and sometimes imprisoned so you will never dare to repeat your foolish actions. Unfortunately our governance is not so good that we can teach these miscreants a lesson.
If properly punished not only these miscreants but also other who come to know about this punishment will start behaving properly.
Knowledge is power.
I am not convinced that genuine travellers would have done such pilferage and damage in a large scale. I just cannot believe that genuine travellers could have inflicted such loss as if they have run rampage. on the very first trip itself. I can understand if some stray pilferage and nuisance damage occurred. Something somewhere causes doubts.