On Sunday the Canadian police finally cleared away anti-vaccine demonstrators who had been blocking the Ambassador Bridge between Detroit and Windsor, a key commercial route that normally carries more than $300 million a day in international trade. Other bridges are still closed, and part of Ottawa, the Canadian capital, is still occupied.
The diffidence of Canadian authorities in the face of these disruptions has been startling to American eyes. Also startling, although not actually surprising, has been the embrace of economic vandalism and intimidation by much of the U.S. right…
