Recently in Canada police went to visit Ottawa residents based on supporting the trucker protests with Facebook messages. It’s unclear how they got the addresse

Recently in Canada police went to visit Ottawa residents based on supporting the trucker protests with Facebook messages. It’s unclear how they got the addresses from the names, presumably the phonebook and hope for the best? In any case you can see how the UK would love to have your identity connected to your social media posts. South Korea has had national ID as a mandatory online identity for over a decade IIRC