On Friday evening, a group of corona-sceptics armed with flaming torches massed outside the house of Petra Koepping, the health minister of Saxony state. The scenes in the stronghold of Germany's far-right, accompanied by thumping drum beats, were reminiscent of Nazi-era marches, drawing condemnation from mainstream politicians. Not only in Germany, but also in the Netherlands and Austria, security services have warned of growing radicalisation among coronavirus-sceptics. But Simone Rafael of the anti-racism Amadeu Antonio foundation said that policing the online sphere was easier said than done. "We see more and more users on Telegram spreading private addresses in order to attack these people," he said.