Canadian filmmaker Denys Arcand’s new film “The Barbarian Invasions” was a hit at the Cannes film festival. It’s about an aging left-wing baby boomer who, dying of cancer, is comforted by his millionaire son. The kid brings all his dad’s pals together, brings them to a lakeside where they smoke pot, talk about sex and politics, and indulge in a buffet that includes caviar and vintage wine. Then Remy goes out on his own terms by shooting up with a fatal dose of heroin. In today’s New York Times, Arcand, 62, says of this film, “I wanted to imagine the perfect death. The death I would wish for myself.” What a statement about the Sixties generation.