Like everyone else who was paying attention, I groaned when I learned that the mayor of New York, Bill de Blasio, had entered the presidential race. No one wants him to run -- hell, I voted for him twice and I don't want him to run. As Jennifer Senior of The New York Times noted yesterday, de Blasio started his run with a trolling effort that went spectacularly wrong: On Monday, the mayor tried to hold a stunt news conference at Trump Tower.