The Globe and Mail reports in its Thursday edition that Canada, it appears, has avoided the worst of it. The Globe's Lawrence Martin writes that though previous tariffs on autos and steel and aluminium still apply, Canada, along with Mexico, is not on the list of countries hit hard with President Donald Trump's new tariff announcements on Wednesday. "Liberation Day," however, is still a dark one. With his slew of tariffs launching a global trade war, Mr. Trump is giving us his front-runner for the title of "Stupidest Decision of My First 100 Days." His gratuitous economic warfare is logic-defying. Just as the scourge of inflation had been eased, his tariffs, as economists attest, are sure to revive it. The Republicans are the party of low taxes; the tariffs constitute a significant tax hike. Mr. Trump wants to reshore jobs. America's unemployment rate is already at one of its lowest-ever ebbs. The U.S. economy was left in good condition by Joe Biden's administration. Mr. Trump's handiwork is likely to destabilize it and bring on a downturn, if not a recession. Markets have had their worst first quarter in three years. Mr. Trump tariffs threaten global economic stability. They turn American allies into adversaries.