Elon Musk’s maybe-impending purchase of Twitter is being treated not as a mere business acquisition but as a kind of twilight battle over the fate of the American experiment. Maybe there was a time when hypothetical and probably minor changes to the terms of service of a social networking website could be seen as an eminently survivable event, without any larger implications for long-established rights and customs like free speech. But those days are gone now, as evidenced by yet another high-p...
