LAS VEGAS (KLAS) — A Downtown Las Vegas street performer is asking for transparency after a run-in with security. Clive Hayward has practiced magic since he was eight years old. He's performed at the Fremont Street Experience for nearly a decade. In October, Hayward said he had a run-in with security and Las Vegas City Marshalls, who told him he wasn't allowed to use his dolly in his street performer circle. Hayward said the street performer cir…