On the Internet, no one knows you're a dog, but someone in the liberal media just informed me that the president of the U.S. is a black man. And as such cannot be criticized or joked about by conservatives. Obama is off limits! They can make all kinds of rude and crude jokes about George Bush, even comparing him in thousands of crude cartoons over the past eight years as a chimp, but man. If you were to follow suit comparing today's president to a smirking chimp you would be crucified! And Sarah Palin's family and children? Open season! Even...