Harrowing yet exhilarating, Ruben Östlund's art-world satire "The Square" took the Palme D'Or at Cannes. Östlund's last film, "Force Majeure," made the top half of my top-ten list in 2014 (and its exclusion from the Oscar shortlist was another blot on the Academy). Östlund is better than any other director working at putting you smack in an unpleasant situation and forcing you to think about and decide what you would do. It's a cinema of dilemma, but more so a cinema of discomfort. Things - aural things even more than visual - are always happening around the edges of his frame that keep his characters and us from ever being able to relax. I was surprised but not shocked that both the friend I attended "The Square" with and two friends to whom I had recommended it walked out. I, on the other hand, was nodding my head up and down with excitement. In a largely moribund current cinema, "The Square" feels jarringly alive.