I can already hear the cries of censorship. "What do you mean crimes aren't protected speech?"
I don't necessarily disagree with you, but I think you've got that backwards: freedom of speech is a right, that a government ought to recognize. "Protected speech" makes it sound like the only speech we're allowed is what is specifically allocated to us.
“Freedom of speech”, much like “freedom of religion”, is an empty statement. — no man wants true freedom in either, so one is only free so long as it not thread over the bounds of the law, and it can thus be surmised as “One has the right to commit legal actions.”.
It's entirely different from such matters as “right to a criminal defence attorney when charged with a crime”, which many do feel should be absolute, and that all other laws must bend and give way to accommodate it.
One already has the freedom to do whatever one wish, so long as it not thread over the bounds of the law.