Heros

People today have a different ideas of what a hero should be, however they really have not changed all that much.  Hancock is a perfect example, he is a drunk bum that no one likes all that much, but he saves lives.  At one point people demand Hancock stop his "heroics" because he causes more destruction that he does good.  Once he quits crime goes up and the people realize that they need him in order to be safe.  In that way, all of the bad things heroes cause are counterbalanced by all the things they do to help their society.  This is similar to Hercules, he does some pretty despicable things, but the amount of good he does is so important people tend to turn their back on the bad things he has done.