Once there was a lady who worked in New York. She was a busy marketing executive named Karen Olson and when running around from place to place she passed a lady- a homeless lady- every day on her way to work. One day, Karen gave the lady a sandwich. Karen was overwhelmed by the needs not only of the homeless lady on the corner but of those in her own community in New Jersey.
After the first sandwich, she went to the city frequently with her children to hand out sandwiches. Eventually, in her own community, Karen found that Sunday school rooms, empty all week, could be used to house homeless families at night. Volunteers fed them and helped parents find jobs and keep kids in school while the families got back on their feet.
Family Promise is active in many communities around the United States. You can follow this link here to find them in your own neck of the woods and volunteer to help. A&P have been hauled away from the XBox to help at Family Promise and other places. Just one meal will help.
When there is overwhelming need, it is hard to know where to start. One of my friends always says that we don't change the world alone and we don't have to do it all right now. Start on one street corner, with one lady and one sandwich.