Make Space Great Again

 The end of free speech will not necessarily come when there are soldiers in the streets, secret police in the alleyways and a mustachioed man screaming at you on a television set that can't be turned off no matter how hard you turn the knob or click the buttons.

Some of these things certainly existed in totalitarian countries. But they were there to sweep up the hardened dissenters who refused to be silenced. The vast majority of citizens did not have bugged phones or men in trench-coats following them around.

That was what their friends and neighbors were for.

The first line of offense by a totalitarian society against freedom of speech is crowdsourced to the people in the streets. It begins with the imposition of a social norm, escalates to punishments for violating that norm and concludes with gulags and firing squads.