Stories about anti-Obama hostility keep piling up and I noted this one today in the Charlotte Observer: 30 people attending an Obama rally in Fayetteville, NC had their tires slashed on Sunday. I've been upset, but not surprised, by the growing intensity of angry rhetoric surfacing among Obama opponents. But thus far, there has been relatively limited physical action. These tire slashings are a signal that people are beginning to cross lines into clearly criminal conduct. The closer we get to having an African-American president, the more dramatic the backlash we can expect. I know that many people think that, given where America is today, an Obama election wouldn't be all that momentous. The terrified tired slashers know better.