After yesterday's Holocaust Memorial Day, I have a request: Let it be the last one, at least outside the Jewish world.

Let's put an end to the shallow declarations of "Never Again," which have degenerated into denunciations against long-dead Nazis made from a safe historical distance. This is risk-free grandstanding, which German writer Johannes Gross summed up well: "The resistance to Hitler and his kind," he once wrote, "is getting stronger the more the Third Reich recedes into the past."

Holocaust...