Jefferson Street, downtown Lafayette, Louisiana. The heavy glass door is unlocked, and inside is a long, narrow staircase that leads to a small landing with two brown steel doors of industrial strength on either side. The mauve-colored walls are illuminated by a dim light fixture. An old sign reads “Watch Your Step.” Fling open either door and you’d expect to see a dentist’s office or an insurance company. After all, Jefferson Street is the ma...