A ban in Brazil got Telegram to reverse its position on content moderation

Telegram is the last major social network that refuses to moderate misinformation. The app, which has over 500 million users, is run by a libertarian founder and a small team of programmers who are philosophically opposed to taking down almost any content (unless it incites violence or spreads child porn). Its public channels have become a haven for conspiracy theorists and extremists who have been kicked out of other platforms, like Facebook and Twitter.

But a ban in Brazil has forced Telegram to reverse its position on content moderation. On...