He’s No Jack Kennedy

Let’s just go ahead and say the quiet part out loud: Robert Kennedy Jr. — the nephew of John F. Kennedy, the son of Robert F. Kennedy — is a bit of a crank.

This is not breaking news. The 69-year-old scion of America’s most famous political family has been peddling anti-vaccine hysteria since long before Covid-19 made it trendy, along with a spicy stew of other conspiracy theories. Notable offerings: that the 2004 presidential election was stolen by Republicans, psychopharmaceuticals are responsible for mass shootings and the C.I.A. had a hand in the assassination of...