New York Congressman Adriano Espaillat has called it “an 18th-century solution to a 21st-century problem.” New York City Mayor Bill De Blasio has vowed to shutter it in the next decade. Most people don’t think about it unless they’re flying out of LaGuardia, but many don’t have that luxury: Rikers Island, the bête noire of the East River, is one of the largest and worst prisons in America and a hotbed of violence and neglect. Stephen Adly Guirgis’ 2000 play Jesus Hopped the ‘A’ Train, in revival at Signature Center, aims to counteract that neglect and remind its audience of the discarded, forgotten lives behind its iron gates.