Ben Shahn, who took this shot in 1935 Natchez, Mississippi described these two as "homeless children." Although North America now has a social safety net, in many parts of the world some youngsters still fare for themselves.
[American Memory link]
Showcasing some of the 160,000 images taken between 1935 and 1944 by government-hired photographers. (If you were to look at 100 of them per day, every day, you'd need more than four years to view them all).