If downtown is the heartbeat of Minneapolis, then its collective soul resides on Hennepin Avenue, the corridor that’s long served as its cultural, commercial, and entertainment epicenter. But these days, visitors aren’t seeing the intoxicating glimmer Schmidt beheld so long ago. Talk to civic leaders, downtown workers, and couples descending from Burnsville, and they’ll tell you to drive down Hennepin with the windows open once the sun has called it day. If you watch and listen, the feeling isn’t one of good vibrations. It’s energy with a serrated edge, the vibe that comes from a city turning mean. Apocalypse now...