 Another comparison he brings is the parallel relation between "Copkiller" and Lydon's role with the relation drawn from the film "Performance" and Mick Jagger's role there; Prothero describes the blurring of Lydon's stage persona with his onscreen character, stating that defining proofs about this hypothesis are Leo Smith's tantrums "ala" Johnny Rotten, his mixture of arrogance and cynicism and the fact that Lydon wears his own clothes throughout the film.Harvey Keitel's portrayal of a corrupt cop has been pointed out as a prototype of his subsequent character of The Lieutenant in the cult classic film "Bad Lieutenant", because of their similarities; particularly in the depiction of self-blame.In the aforementioned chapter of "Harvey Keitel Movie Top Ten", by David Prothero, this comparison is mentioned.