LAS VEGAS

As I sat above the Hoover Dam under the broiling sun, I was getting jittery.

There was Gov. Jan Brewer of Arizona, speaking at the dedication of a bridge linking Arizona and Nevada 890 feet above the Colorado River.

As the politicians droned on and my Irish skin turned toasty brown, I worried that Governor Brewer might make a citizen’s arrest and I would have to run for my life across the desert. She has, after all, declared open season on anyone with a suspicious skin tone in her state.

We are in the era of Republican Mean Girls, grown-up versions of those teenage tormentors who would steal your boyfriend, spray-paint your locker and, just for good measure, spread rumors that you were pregnant.

These women  Jan, Meg, Carly, Sharron, Linda, Michele, Queen Bee Sarah and sweet wannabe Christine  have co-opted and ratcheted up the disgust with the status quo that originally buoyed Barack Obama. Whether they’re mistreating the help or belittling the president’s manhood, making snide comments about a rival’s hair or ripping an opponent for spending money on a men’s fashion show, the Mean Girls have replaced Hope with Spite and Cool with Cold. They are the ideal nihilistic cheerleaders for an angry electorate.