NEW YORK—The trial of rapper Kidd Creole has begun in New York City with his lawyer telling a jury it was self-defense when the hip-hop pioneer stabbed a homeless man to death in 2017. The artist, a founding member of Grandmaster Flash and The Furious Five, is charged with murder and went on trial Friday in a Manhattan criminal court. Prosecutors said the rapper, whose real name is Nathaniel Glover, stabbed John Jolly twice in the chest with a steak knife after becoming enraged because he thought Jolly was gay and hitting on him. The stabbing happened as Glover was walking to his maintenance job in midtown Manhattan shortly before midnight on Aug. 1, 2017, and Jolly asked him “What’s up?” authorities said. “Ladies and gentlemen, this is New York City. It’s 12 o’clock at night. Who’s saying ‘What’s up?’ to you with good intentions?” Glover’s lawyer, Scottie Celestin, told …