If there's one thing about liberals, it's that they're predictably predictable. In their eyes, it is more than acceptable to mock Sarah Palin and her family, using descriptions that range from rude to crude. When President Bush was in office, he was the focus of daily ridicule from left-wing journalists and bloggers. However, no one better make fun of Barack Obama or the thought police will express "outrage" and brand you a racist. That's exactly what is happening now as a poster of Obama in "Joker" makeup is popping up on walls and city streets. My question to the lefties:...