The past two weeks have marked a dramatic change in how the Supreme Court chooses to deal with Brazil’s far-right leader, Jair Bolsonaro. Justices have abandoned behind-the-scenes calls for moderation — which never lasted very long anyway — and have decided instead to use the weapons at their disposal to ensure Mr. Bolsonaro remains within the confines of the Constitution. Four separate criminal investigations have been opened against the president — and now one of his allies has been arrested for threats against the democratic order.
On Friday, federal marshals carried out a preventive arrest order against Roberto...
