Founder’s extraordinary intervention has laid bare rising tensions between European governments and tech firms

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Spain has accused Pavel Durov of “spreading lies” and seeking to undermine democratic institutions after the Telegram founder used the messaging app to attack government plans to introduce a social media ban for under-16s and to hold tech companies responsible for hateful and harmful content.

Durov’s extraordinary public intervention – which came a day after Elon Musk called Spain’s prime minister, Pedro Sánchez, a “true fascist totalitarian” over the proposed measures – reveals the rapidly escalating tensions between European governments and powerful global technology chiefs.