Sometimes I see a bumper sticker which reads, "You CAN'T be Catholic and pro-abortion!" Sometimes I hear someone say, "You can't be Catholic and support same-sex marriage!" As an ontological matter, this is false. You can indeed be a Catholic who supports legalized abortion, same-sex marriage, euthanasia, women priests, or any number of sins that cry out to heaven for vengeance. You can also be a Catholic who burns in the fiery bowels of hell with Satan and his demons for all eternity.