Local labor leaders are fuming over Gov. Arnold Schwarzenegger's last-minute appearance at the annual Martin Luther King Jr. breakfast in San Francisco -- and a lot of their anger is directed at former Mayor Willie Brown. "We've spent a year and a half, and millions of dollars fighting this SOB,'' San Francisco Labor Council head Tim Paulson said of the governor. "For him to come to this breakfast was an absolute insult." Paulson also had a few words for Brown, the lawyer/lobbyist and talk-show pundit (he regularly appears on TV with this column's Phil Matier) who helped engineer Arnold's well-covered...