(Jim Wilson | The New York Times) Outside Twitter’s headquarters in San Francisco, where police have surrounded the building with a double row of bike rack-style barricades in response to word of possible protests, Jan. 11, 2021. “Trump deserved to be deplatformed. Parler, a social network favored by Trumpists that teemed with threats against the president’s enemies, deserved to be kicked off Amazon’s web-hosting service,” writes The New York Times columnist Michelle Goldberg. “But it’s dangerous to have a handful of callow young tech titans in charge of who has a megaphone and who does not.”