Back out on the pavement, staring across the road through the skeletons of half-built semis, the tarpaulin flapping in the breeze, watching the lines of black figures beating their way up the hills through the empty spaces with their big sticks and downward glances, the silent police dogs called Nigger and Shep, Ringo and Sambo, the white ambulance parked at the top of the street, waiting.