Oakland, California, has a special place in the American progressive pantheon — birthplace of the Black Panthers, hotbed of labor organizing and the tenant rights’ movement, Berkeley’s bigger, edgier neighbor — so what happens in this city has ramifications far beyond the Bay Area. And what happened here last week was huge. Voters in Oakland recalled their mayor, Sheng Thao, and their district attorney, Pamela Price (she represented Alameda County, where Oakland is by far the...