FROM CNN's Jack Cafferty: Sarah Palin may have done herself in. The tragedy in Tucson, Arizona, presented an opportunity for Palin to reach beyond her base and strike a note of unity. It was her chance to say something that showed she was capable of true leadership. [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2011/images/01/13/art.palin.mic.jpg caption=""] You see, before Palin opened … Continue reading Palin's reaction to Tucson massacre end her chances of being president?