Monmouth University’s Pollak Theatre will host a free screening of Kristy Guevara Flanagan’s documentary, “Wonder Women! The Untold Story of American Superheroines,” at 7:30 p.m. March 20 at 400 Cedar Ave. The film traces the legacy of the 1940s comic book character to the blockbusters of today, and looks at how representations of powerful women reflect society’s anxieties about women’s liberation.