Grandpa Pickleball, Alvin Bragg, Donald Trump, Kalief Browder, and a personal story — Let’s start off easy, with a recent story about a guy I’ve come to think of as “Grandpa Pickleball.” On March 14, a 71-year-old retired civil engineer named Arslan Guney used a marker to delineate pickleball boundaries on the floor of a public court in Denver, Colorado. Guney, an avid…