HOMELESS
Taking the Wiki definition, "Homelessness categorizes the condition of people without a regular dwelling because they are unable to acquire, maintain regular, safe, and adequate housing, or lack "fixed, regular, and adequate nighttime residence".... but in my opinion this is a very aseptic way of looking at this problem.
Imagine for one second 100 million images like this.... just for one second; this was the UN - Human Rights estimate in 2005 of people living in these conditions in the world....
And the US is not foreign to this problem. More than 1 million homeless find home in the streets in this country.
Learn how you can help and DO something about it. It feels good !
http://www.ehow.com/how_2049819_help-homeless.html