Los Angeles, the summer of 1943. For ten days in June, Anglo servicemen and civilians clashed in the streets of the city with young Mexican Americans whose fingertip coats and pegged, draped trousers announced their rebellion. At their height, the riots involved several thousand men and women, fighting with fists, rocks, sticks, and sometimes knives. In the end none were killed, few were seriously injured, and property damage was slight and yet, even...