Billed as "a (mostly) true story," "Cradle Will Rock" is an interesting and vibrant look at American theater and art worlds facing adversity in 1930s New York played out as a cautionary tale against artistic censorship.

With an imaginative and informative original screenplay that seamlessly harmonizes true-life events and characters with fictionalized ones and acted with a labor-of-love energy by a cast of over a dozen well-respected actors from both film and stage, Tim Robbins' third…