In Medium Cool, a 1969 feature directed by Haskell Wexler, a news cameraman casts aside all morals and shoos the violent street demonstrations that take place at the 1968 Democratic National Convention in Chicago. Combining fiction and cinema verite, the groundbreaking film shows at 1:30 p.m. today at the Cleveland Museum of Art. Tickets are $9, $7 for CMA members and, seniors and students. (Niesel)