Shot like a first-person shooter, the “Blackberry Marmalade” video drops viewers into a parking lot where the camera—armed and unsteady—locks onto Vince Staples. He attempts to defuse the situation but comes up short, as the gunman pushes inside a diner, escalating toward a mass-casualty scene. The video closes on a stark line from Martin Luther King Jr.: “So the question is not whether we will be extremists, but what kind of extremists we will be.”