Nice to see the Times taking a skeptical look at Democratic mayoral candidate Bill de Blasio's early career as an activist supporter of the Marxist Sandinista government in Nicaragua. This is a bit of a "now they tell us" — it would have been nice if Democratic primary voters had this information before they nominated Mr. de Blasio — but at least it comes before the general election. As recently as 1990 Mr. de Blasio was stating that his goal was democratic socialism.