The Enforcer is a 1976 American action thriller film and the third in the Dirty Harry film series, directed by James Fargo. In the film, "Dirty Harry" Callahan (Clint Eastwood) and his new partner, Inspector Kate Moore (Tyne Daly), must stop the terrorist group the People's Revolutionary Strike Force who kidnap the mayor (John Crawford) and steal rockets and rifles for their next attack.
ITC Avant Garde Gothic Bold, a geometric sans serif first created by Herb Lubalin and Tom Carnase in 1970, is the font used for the movie title on the poster. More details about the typeface can be found here.