You would think first of all of a village fair: the entire community of Germantown, Northwest Philly, taking itself up on the brightest of bright sunny fall days and moving en masse, clumps of people—groups of young men in the obligatory hoodies and low-riding jeans, moms pushing strollers, dads lugging car seats, and everywhere children, from toddlers on up, being pulled along (“You’ll remember this all your life!”)—almost all of them African-American and all melding together, as they crowded toward the entrance to Vernon Park, into a full running, laughing stream.