(By DCist contributor Hemal Jhaveri) DCist had heard rumors about Republicans in Hollywood, but never really believed them until you know who was elected governor of California. Rated R: Republicans in Hollywood, a new documentary which premiers tonight on AMC, proves otherwise. Directed and narrated by one time Hill staffer and Democratic speech writer Jesse Moss, the documentary explores the conservative side of Tinseltown, and yes, there actually is one. In the olden Clinton administration…