Free speech is not so daft a concept. Where some restrictions are necessary, the principle of “viewpoint neutrality” still works to prevent censorship. This is the approach that First Amendment jurisprudence takes. So, where the government allows pro-abortion expression, it must also allow anti-abortion expression. But it can still set volume limits and control crowd movements and so forth, as long as it does not discriminate on the basis of viewpoint. And this applies even where its more general obligation to allow all expression does not hold.