tipping point
the tipping point talks about fighting crime in new york city and  it was  rising everyday more than others. there was many cars in the street with a broken window, it was an invitation to make people vandalize the cars.
Because a broken window on a cars symbolize that no one cares about the cars in the street ,no one,s in charge those cars. In that time the crime was rising high in new york city, it is actually different idea about crime in new york city and then there is many cameras wherever people are in the city to avoid the crime.
they take many decisions to keep the environment cleaning up and they encourage each other induce much more socially responsible behavior.