Here’s another movie that’s now 50 years old. And though it hasn’t aged as well as Butch Cassidy and the Sundance Kid (partly because it wasn’t a period piece to begin with), Medium Cool is very much a fascinating trapped-in-amber slice of its times. And in director Haskell Wexler’s 1969 movie, most of the background drama has to do with all the volatility surrounding the 1968 Democratic National Convention. Robert Forster stars, playing a TV camera operator covering the convention in Chicago.