Stephen Sondheim's musical Merrily We Roll Along flopped when it debuted in 1981. But its Broadway revival has been a hit, garnering seven Tony nominations. We talk with director Maria Friedman, who was a friend of Sondheim's, and actor Jonathan Groff. MSNBC host Ali Velshi traces his family's migration across three continents, from a village in India to South Africa " where his grandfather crossed paths with Mahatma…
