it was not surprising to hear all these incidents, but what was surprising is till now there no serious action taken to stop these cases. this is the corruption for which Anna is fighting for under lokpal. If serious action is taken to these officers responsible for stopping then its easy to stop. As we cant stop 20 or 100 passenger who are initiating and encouraging this, but can stop these by giving serious action to the 1-2 officers who are responsible to stop these, so that other officers will dare to do future. And if they are strict then these 20-100 passenger will dare to do it due to the threat of these officers.