Ottawa police vowed on Friday to crack down on an "increasingly dangerous" protest by hundreds of truckers who have shut down the centre of the Canadian capital for eight days to demand an end to Covid-19 vaccine mandates.

The well-organised blockade, which police say has relied partly on funding from sympathisers in the United States, is unprecedented by Canadian standards. Hundreds more truckers planned to enter the city this weekend, Ottawa police chief Peter Sloly said...