Why Telegram’s Extremism Worries Governments So Much

Whether it’s spreading conspiracy theories or organizing riots, messaging app Telegram has become a focus of extremist activity online. The service, started in 2013, is one of the most downloaded apps worldwide. Its private chat setting has made Telegram a free space for open discussion in countries with authoritarian regimes. But a relatively light-touch approach to content moderation means it’s now a prime target for governments trying to stop criminal activities and the spread of misinformation that can destabilize societies. On Aug. 24, French authorities arrested Chief Executive Officer Pavel Durov over an alleged...