Billy Ray Harris. GiveForward.com/billyray hide caption

Jacqueline Syra has been living in the La Piste camp for three years. She says she has no idea when she will be able to leave. David Gilkey/NPR hide caption

The photo that touched many hearts: New York City Police Officer Lawrence DePrimo gives a shoeless man a pair of boots on a frigid night last month. That man was later identified as 54-year-old Jeffrey Hillman. Jennifer Foster/NYPD via Facebook hide caption

A young girl hangs out at the Maslow Project. Courtesy of David Gibb Photography hide caption

Zaniyah sleeps while her mom shops at the Bread for the City boutique. Courtesy of Caroline Lacey hide caption

People lend a hand to others at the Project Homeless Connection. Courtesy of PHC hide caption

Homeless children have the opportunity to play with volunteers. Courtesy of The Homeless Children's Playtime Project hide caption

Volunteers distribute food outside a Philadelphia Department of Public Health hearing in March on rules banning outdoor food distribution. Alex Brandon/AP hide caption

The Colorado Coalition for the Homeless runs the Stout Street Clinic in Denver, helped Dale Miller get a CT scan. Colorado Coalition for the Homeless hide caption

Angelic Davis, with her three-month-old son Richard Williams IV at a homeless shelter in Dallas on Monday (Dec. 12, 2011). LM Otero/AP hide caption