‘The Day the Clown Cried,’ funnyman Jerry Lewis’ infamously terrible Holocaust movie, is having a new moment. But you still can’t watch it.

In 1993 the film critic Shawn Levy was working on a biography of Jerry Lewis when, sitting down with the comedian on his yacht, Levy gingerly asked him about “The Day the Clown Cried.”

Levy knew the film, Lewis’ unreleased…