Al Sharpton isn't going to be happy when he hears this. Apparently, George Zimmerman, who killed an unarmed Trayvon Martin in February, has black ancestors. The 28-year-old former neighborhood watchman is depicted in the media as an "angry white man" with hatred toward other ethnic groups. That narrative fits perfectly with liberals' view of America as a racist nation in which black children live in constant fear of white vigilantes, but this story is taking some interesting twists. The neighborhood watchman shot an unarmed Martin inside a gated condo complex in Sanford, FL. It turns out he is of mixed...