Another example would be the woman who has the gall to braid hair without a license - if she hadn't broken the law, nobody would talk about it, there would never be any chance for reform, and we would all be incrementally poorer for it.
I'm not taking a position on specific laws, just that it's important that some laws occasionally be broken so that as a society we can test whether or not it matters if someone breaks them. If breaking a law doesn't result in negative outcomes, it shouldn't be a law.