A San Francisco police officer was in serious condition with a head injury and three suspects were in custody Saturday following a demonstration by anarchists who broke windows in the Mission District to protest the gathering of the Group of 8 leaders in Scotland. Police did not release the name of the officer who was hurt in Friday night's melee. Deputy Police Chief Greg Suhr said Saturday that the officer was in serious but stable condition with brain swelling at San Francisco General Hospital. He has developed a blood clot, which doctors hope to dissolve before he is released, Suhr...