Bulletin Today | EntertainmentThe ancient Greeks had the Dionysian mysteries, when they would abandon propriety, dance wildly in a trance-like state and revel in various sorts of intoxicated excess. For boomers, that sounds eerily similar to Rolling Stones concerts of our youth. A 1972 Associated Press account of a Stones show at Philadelphia’s Spectrum arena – “a festival of heat, hysteria, perfume, sweat, marijuana smoke and deafening music inside” — merely grazes the surface of the hedonistic mass ritual. Related: The Stones’ 50 …