Demonstrations against Covid-19 restrictions and other issues have blocked several crossings along the U.S.-Canada border and hurt the economies of both nations. They also inspired similar convoys in France, New Zealand and the Netherlands. The U.S. Department of Homeland Security warned that truck convoys may be in the works in the United States.

Police in Windsor, Ontario, arrested 25 to 30 protesters and towed several vehicles Sunday near the Ambassador Bridge, which links Windsor — and numerous Canadian automotive plants — with Detroit. The bridge reopened to traffic late Sunday night, a spokeswoman for bridge owner Detroit International Bridge Co. confirmed. Canada Border Services also confirmed that the bridge is open…

About 470 miles (750 kilometers) northeast of Windsor, the protest in Ottawa has paralyzed downtown, infuriated residents who are fed up with police inaction and turned up pressure on Prime Minister Justin Trudeau.