HUDSON - Every school day Hudson High students arrive to find Old Glory flying over the campus. On Wednesday, though, there was something else."My stomach just dropped," 17-year-old Melissa Foster said Thursday."I got the instant sick feeling of who would do this and why?"Flying over the school was a Confederate flag with the words "I ain't coming down" printed across it. It fluttered over the campus from the darkened morning hours until the first half-hour classes, its halyard cut so that it couldn't be lowered.Some students, offended by the symbol they equate with racism, spent the morning trying to find...