The obvious answer would be any Buñuel film, Un Chien Andalou was released in 1929 and is appreciably more viscerally intense than pretty much anything on TV today. Far from the only example. Don't fall into the trap of thinking our modern ideas are new, they aren't, everything new you will ever see was previously thought of, tried out, and discarded by past people whose culture didn't have a use for it at the time. Everything. It's incredibly misguided to think a modern cartoon would be overwhelmingly intense to a supposed primitive of the 1960s, only perceived as colors and motion. It's a form of teleological presentism that perpetuates the fiction that we're somehow more intellectually developed than people who came before us. That happens a lot. It makes us uncomfortable to admit that a paleolithic man could function as well in a modern office as any of us, so we invent feel-good myths about how we're more intellectually sophisticated than every past generation, but we aren't. Not socially, not biologically, not at all. It isn't surprising that people still believe in pop-pseudohistory like the so-called Dark Ages, a Renaissance fiction.