Therefore, your problem is still there: your problem is to change minds. Without this, government or not, you can expect to achieve nothing, no matter what you fight for.
Sorry, I don't buy it. Apply that to other sorts of things that there are laws against. Do you say, "you can't stop people from killing each other. No, you can't. You have to change people's minds or else there is no purpose passing a law against murder."
Yes, I'm well aware of the straw man I've just built. I think it's a rather nice straw man.