 In the U.S., the Vietnam War was on the front burner, the populace was passionately engaged, and the police riots outside the '68 Chicago Democratic Convention and the murder of Black Panther Fred Hampton were raw wounds.With this stylish, intense indictment of the assassination of a leftist political leader by a right wing government cabal in his native Greece, director Costa-Gavras struck a nerve that resonated here and around the globe.