As for the action genre, its inheritance of aspects of film noir and the social problem film was evident in important early actions films such as Dirty Harry (1971) and Shaft (1971) and Walking Tall (1973) and the first Mad Max (1979), and sustained in many of the best films of the genre ( First Blood , Terminator, Predator, Aliens, RoboCop, Die Hard, Bourne Identity, District 9 ).