I agree that arresting someone for not leaving a tip is a little excessive. And isn't tipping supposed to be up to the customer's discretion anyway? I thought the whole point of tipping was to reward someone for good service. If the service was so bad that the customer felt it wasn't worthy of a tip, why should he be forced to leave one? I agree with tipping in general and think people should do so whenever possible, but I don't see why anyone should be forced to tip after receiving horrible or non-existent service. Perhaps there is more to this story than what we've been told.