New Yorkers from violent, drug-infested neighborhoods understand quite well.
The fear of getting through the day in a violent neighborhood has diminished somewhat.
These hormones rise or fall as a person is exposed to stress, like that inner-city children may experience in violent neighborhoods.
Elisa, a beautiful young girl who has grown up extremely poor in a violent neighborhood, makes a living as a pickpocket.
They lived in violent neighborhoods that were surrounded by militia checkpoints.
Moreover, they said, a "zero tolerance" policy would not deal with why some youngsters brought weapons: to feel safe in violent neighborhoods and schools.
If not, he urged him to join the Army to escape the violent neighborhood.
Indeed, many students applied yesterday for transfers out of the school, which is situated in one of the city's most violent neighborhoods.
Finally, another argument cited by academics researching gun violence points to the positive correlation between guns in the home and an already violent neighborhood.
Now, Iraqi soldiers or police officers take the leading role in securing more than 70 percent of the city, including its most violent neighborhoods.