I agree, but the long term effects of something like this could have chilling effects. Who gets to determine of someone is "rude?" It's very subjective. Can you get kicked out for not saying sir or ma'am, talking to loud, what if someone thinks someone is being sarcastic. This would be an easy way to silence any differing views from the public. Hopefully we chill out on our own and can act civilly as a society without the government telling us to.