Here we go again: there’s another book about Sacco-Vanzetti that gets it wrong.

In his vivid, smoothly written narrative of the Sacco-Vanzetti case, Bruce Watson concedes that Sacco, a skilled shoe worker, and Vanzetti, a bookish fish peddler, may have been “legally complicit” in the 1919 bomb conspiracy. They were “gentle dreamers whose dream included armed rebellion.” But Mr. Watson does his best (without quite succeeding) to overcome his nagging doubts and persuade himself that both men were innocent in the April 1920 Braintree murders.

By now, any author should know that even their lawyer conceded their guilt. Upton Sinclair knew, but kept his mouth shut.

But the biggest omission in any telling of the Sacco-Vanzetti case is leaving out the manipulations of Stalin, who used the case to stain America’s reputation (our good example reflected badly on his police state).

That new books and new documentaries perpetuate Stalin’s propaganda is a sad commentary.