One of the pitfalls of so-called "concerned photojournalism" is obscurity. Many photojournalists who take on unusual or underreported stories have difficulty finding outlets for their work in today's mainstream media. One group that's helping address this situation is the Open Society Institute -- a private, grantmaking foundation with headquarters in New York City. The OSI annually puts together a group photo exhibition of photographers who are bringing attention to underreported social issues. This year's group show, Moving Walls 13, has just been opened to the public at the OSI headquarters; an online version of the show includes compelling photo galleries by the featured photographers (including Edward Burtynsky, whose "Deda Chicken Processing Plant" is above).