Anti-mask protesters pose challenge for EU authorities

The past four weeks have seen a flare-up in anti-mask and corona-denier protests in European cities.

There is a risk these will grow as EU states re-impose hygiene measures due to a second wave of infections - posing a danger to public order and health.

Russia and China helped pave the way with disinformation campaigns.

But the trend is more complex than that, posing a challenge for EU regulators, who also need to protect rule of law and free speech.

Unusual ti...