This was interesting - I walked into this alley a couple of blocks from the AME church, and saw these pieces of cloth or whatever they are hanging from the trees. So I asked some people, students probably, who were sitting in a window overlooking this scene, "What is this about?" And they answered "Those were always there." Which is odd, because I've not seen these before, and have walked this alley recently. Leica Q, f1.7, 1/80 sec. handheld, ISO 200.