The phenomenon is exactly what it claims to be: people snapping photos of themselves posing with homeless people. Sometimes, these photos are proper selfies, captured by the subject of the photos; more often, they`re simply portraits shot by some unnamed photographer. Sometimes, they feature subjects posing with a smiling homeless person; more often, the posing occurs without the consent of the homeless person in question. These images are common, it`s worth noting, only in the sense that there are enough instances of them to populate a Tumblr. They are also, it is needless to say, profoundly sad.