This past week was the 57th anniversary of the death of Mary Jo Kopechne, a young woman who somehow found herself in a cardriven by a drunk who just happened to be the brother of a dead president. Most people born after 1980 really have no idea who she was, unless they have an interest in ancient pop culture. Tragically, that is what Mary Jo, a Pennsylvania native, has become to so many: An asterisk in the larger narrative of the so-called “Lion of the Senate.” To me, this pro-abortion womanizer was much more of a jackal, but I’m one...