Joe Biden will travel to Buffalo on Tuesday, ostensibly to join the upstate New York community in mourning the murders of 10 people at a local grocery store over the weekend. It is, of course, appropriate for Biden in his role as president to grieve with Americans devastated by such a brutal massacre of innocents, especially an attack that from all accounts was racially motivated. What’s not appropriate is for Biden to use the atrocity as a platform to fuel even more hatred and division in a country ripping apart at the seams in so many ways—but that’s exactly what...