THE HOLLYWOOD BLACKLIST: Professor Val Franco will discuss the mid-20th-century practice of denying employment to screenwriters, actors, directors, musicians and other entertainment professionals because of their suspected political beliefs or associations. High Noon (1952-84 min.), in which a sheriff (Gary Cooper) must defend a town of righteous cowards from gunslingers. Fred Zinnemann’s classic co-stars Grace Kelly, Thomas Mitchell, Lloyd Bridges, Katy Jurado and Lee Van Cleef. Early start time: 7 p.m.