A year ago today, a white police officer shot and killed a black teenager in a suburb of St. Louis, Missouri, catalyzing a firestorm of protests and re-animating national conversations on issues of race, policing, and violence in the US. Michael Brown's bleeding corpse was subsequently left facedown in the middle of the road for four hours on the afternoon on August 9, 2014 — exposed to the midday summer sun and eyes of residents, a few of whom snapped cellphone images that would eventually spread across social media, the nation, and the world. At Brown's funeral, two weeks later,...