Flowers and Barbed Wire: Walking In American Cities

He sat, on a concrete wall, with all his grubby belongs, and his sleeping bag beside him, across from the convention centre in San Diego where I was among 7000 mathematics teachers attending an annual conference. He sat, yards from the Gaslamp District, and PetCo park, and a few hundred yards from the USS Midway, and the cruise ship dock, where, for a fee, families live out their Disney dreams in…