Among all the ways that COVID-19 affects our lives, the pandemic confronts us with a profound moral dilemma: How should we react to the deaths of the unvaccinated? On the one hand, a hallmark of civilized thought is the sense that every life is precious. On the other, those who have deliberately flouted sober medical advice by refusing a vaccine known to reduce the risk of serious disease from the virus, including the risk to others, and end up in the hospital or the grave can be viewed as receiving their just deserts. That’s even more true of those who...