they want to be able to make you to sit down and shut the fuck up, and also make it painful enough that you won't DARE do it again.
I agree 100%. It would just get sticky with voters because a) to quote George Carlin on the law of averages: "Think of how dumb the average person is, then realize that half of all people are even dumber than that!!" and b) they will sling it as protecting children and fighting hate-speech. I'm not saying protecting kids or fighting hate-speech is bad; it's just stupid how few people would realize it wouldn't do either of those (it might make protecting kids harder actually) and as you say just give them the ammo they need to try to shut you, the free-speaker, up.
"Beware of programmers carrying screwdrivers." -- Chip Salzenberg