Right, but then that tiny fraction starts getting other ideas…ideas like “if I can discredit my political opponents’ message while broadcasting my own far and wide then no one can stop me from inflicting my hate upon the world”. And they’ll hide behind the First Amendment along the entire way, claiming that you’re the one trying to silence them. You cannot have reasoned, measured discussion with hateful racists. If you give them an inch they will take a mile, then tell you you’re the oppressor for simply wanting even half of that inch back.