Children, many in fancy dress, spilled across the residential street, clutching ice creams, removing their shoes to play on bouncy castles and fishing plastic ducks out of a paddling pool. Young people from a local martial arts club demonstrated their skills and groups of parents acted out popular stories while children watched enthralled. Most importantly, there wasn't a moving vehicle in site - the road was closed to motorists to allow children free rein. "Events like this send a message to...