It's another MSNBC image. These folks have buried themselves in the dirt to protest poverty and marginalization. They are outside a church, and they have announced that they will stay buried here until the mayor arrives to talk to them about their concerns.
I love these guys! They're like the Earth First! dude, except that 1) they're probably cleaner, and 2) they aren't preventing anyone from entering anywhere; they might not even be trespassing. All they want is to be heard.
And while I don't know whether the mayor paid them a visit (if I were the mayor I would definitely go talk to them), but they've now been seen by hundreds of thousands of people around the world.