A note arrived recently from Lori Bell-Santek, who is frustrated because she has been unable to find African-American Baby Alive dolls for her two biracial granddaughters. She made the rounds at Target, Wal-Mart and a few other stores and all she could find were white versions of Baby Alive. "In Wal-Mart," she wrote, "I took a moment to look up and down the aisles. It was the day after Thanksgiving, and the store was filled with shoppers. In the doll aisle were several little girls of color, and they were all looking at the same 'white, blond, blue-eyed' dolls. I...