As unbearable as it is to think about the man who currently dwells in the White House, fouling the office he holds to a degree no one could have begun to imagine, and every single day, it’s good also to remember another time. Here was one: Usher getting “Mercy Mercy Me” so very, very right that Marvin couldn’t have been more touched. In the presence of the Obamas and their guests: this is who we are.