To a Michael Wall score that mixes crowd noises, breaking glass, and what sounds unnervingly like gunshots, five dancers advance warily, arms raised as if to ward off an attack. … The society Griffin creates onstage feels dangerous … and like an apt reflection of the present moment, in which the show took place outdoors on a chilly evening since we’re not yet done with COVID; and with a flag directly behind center-stage flying at half-staff in honor of the country’s latest mass shootings.