Why people think it is good idea to engage in mass suppression of speech? It is not just Trump himself, general Flynn, Powell, and even a random political cartoon satire author (that is not pro-trump) got banned.
If you take speech (and thus diplomacy) out of your opponent toolbox to deal with you, what tool is left?
If you take speech (and thus diplomacy) out of your opponent toolbox to deal with you, what tool is left?