A new documentary focusing on the revolutionary changes that hit the American art scene beginning in the 1960s has an intriguing premise: that artists of the era consciously abandoned any attempt to cater to existing public interests and began creating art that viewers would simply have to “catch up” to. But in the years since Warhol, Stella, Hockney, and others burst onto the scene, much of the museum-going public has managed to embrace the revolutionary style they embodied.