Minneapolis/ St. Paul is quite the progressive little metro area. Good community. There's the well-meaning, clueless, "we're cosmopolitan because we have gay people" thing from some of the affluent, but they're mostly harmless. Irritating much more than hostile.
As to the specific culture of the programs, I don't know much. I've observed a few local ED's as an EMT and/or student, and work at one of the best of them now. I doubt the faculty or other residents anywhere I've been would give a crap about anything other than your skills. Nor would the staff I know tolerate any kind of bashing; that's noise, and it mucks up the program for everybody.