I routinely walk home from work in Downtown DC, and my regular route takes me over Memorial Bridge. Every time I cross, I see two large pieces of trash--one a truck bumper, from the looks of it, and the other (ironically?) a big ol' garbage can--just off the bank, and after two years am fed up. It's an itch I can't scratch. It's a blemish I can't quite reach. At this point I'd settle for borrowing some waders from the National Park Service and fishing them out myself. N.B. the attached image shows only the garbage can; the bumper is a few feet away.