"But more often, they say, the assailants are outsiders: men or in 
most cases teenage boys who punch, kick, shoot or set afire people 
living on the streets, frequently killing them, simply for the sport 
of it, their victims all but invisible to society. "

<http://www.nytimes.com/2009/08/08/us/08homeless.html>http://www.nytimes.com/2009/08/08/us/08homeless.html 



"People Who experience mood swings, fear, voices and visions"