As Tim Stanley pointed out over at the Telegraph, it's hard not to do so. When Pope John XXIII died in 1963, Paisley assured a group of protestors that "This Romish man of sin is now in hell." "De mortuis nil nisi bonum" meant nothing to him.
Paisley was a wretched, mean-spirited man, a figure of Cromwellian unpleasantness. He had no tastes, no interests. (Asked by Sue Lawley of the BBC what book other than the Bible he would bring with him to a desert island, he replied "Foxe's Book of Martyrs.") The only thing he ever seems to have enjoyed was speaking in public, whether behind a podium or a pulpit. His theology, such as it was, comprised the two beliefs, held with something like equal fervor, that priests were hell-bound sodomites and alcohol was "the devil's buttermilk." A good day's work for Paisley was shouting "Antichrist!" when Pope John Paul II addressed the European Parliament and having things hurled at him by his fellow MEPS before being dragged out of the chamber by Otto von Habsburg.