 In retrospect, despite contemporaneous claims in the 1970s of overly conservative or reactionary themes within the genre, film historians such as Louis Bayman and Peter Bondarella contend that, in fact, "poliziotteschi" films generally presented a more multi-faceted, complex outlook on the political turmoil and crime waves of the time, as well as violence in general, with Bayman and author Roberto Curti in particular arguing that the genre generally used political conflicts and violence for largely apolitical tension-building and cathartic or emotional purposes rather than to promote any particular political agendas.Curti notes that the genre's protagonists often simultaneously displayed both right-wing and left-wing views, and protagonists were often working class while villains were often wealthy right-wing conservatives.The film "Caliber 9" (1972), for instance, features protagonists of both right-wing and leftist ideologies and offers differing views on the causes of crime and the true antagonists of law-abiding Italian society, while "Execution Squad" reveals the actual antagonists of the film to be right-wing reactionary, "tough-on-crime" ex-police officers and vigilantes rather than the initially suspected leftist militants.