“…72 This project will inevitably present challenges to the coherence of Free Speech law and to our reasoning capabilities. 73 For our purposes, the result of the Court's handiwork is that the general rule of Free Speech jurisprudence is that Free Speech is presumptively protected unless government can persuasively prove the presence of a clear and present harm independent of the speech, as in the case of Ferber's recognition of child pornography as unprotected speech.…”