End of the day, it doesn't matter what sport, hobby, business, organisation or whatever, there will always be the 1%'ers that are simply dicks and ruin things for the people doing the right thing and enjoying themselves.  There are plenty of people in boats that do the wrong thing as well as boardriders who surf too close to swimmers or venture into the flags. 

There is a time and place for everything and from my experience it is the younger guys out there who don't realise this and simply don't have the life experience and maturity to comprehend it.