It is a consolation much needed as Roe v. Wade nears its thirtieth anniversary. If you do not consider abortion a grave injustice, consider what the world looks like to those of us who do. More than 40 million unborn lives have been snuffed out — which implies that something like a third of American women have had their sons or daughters killed. A quarter of unborn children die this way. The most respected political institution in the land, the Supreme Court, says that all this killing is protected by the Constitution. So in the event you persuaded your fellow...