Colombia, which is America's strongest ally, has always had the most level-headed voters in the region. They've had two conservative parties, sometimes at once, and voters there have always rejected the crazy left, which in their case, is a Castro-grade revolutionary crazy grade of left, with Bill Ayers-types on steroids. They did, after all, fight a 60-year war against Marxist narcoterrorists, with only a few university wokesters defending them. So it was shocking news that on Sunday, Colombians went and elected just about the worst leftist of this stripe, a former M-19 narcoguerrilla named Gustavo Petro, president, turning one of...