The evolution of the Puerto Rican Day Parade in New York City this month, as well as Mayor Bill de Blasio’s position on it, has come full circle. The original decision to honor convicted FALN terrorist Oscar Lopez Rivera as a hero of the people or whatever honorific they had in mind immediately sent sponsors scurrying and resulted in many prominent figures refusing to march with him. Not the Mayor, however, who claimed to understand the nuances of the situation, even though he “disagreed†with some of the things the bomb maker had done. But as the list of those...