Kendrick Lamar is rap’s resident theater kid, an observer who can wrest drama from any situation Photo-Illustration: Vulture; Photo: Frazer Harrison/Getty Images Kendrick Lamar tends to preach peace over conflict, but a shadow lurks in even his cheeriest songs. Many artists are unpredictable, but for the 37-year-old rapper spontaneity is a worldview as much a style. His narratives constantly fork and waver, swinging from pole to pole. He prizes his contradictions and builds songs around the