+2
NBK isn't really "based" on anything; it uses a Bonnie & Clyde story to portray a media-corrupted world in a very surreal way that mixes potent imagery with hyperactive editing to reflect the bombardment on its populace. Everyone is on ego overload, and absurdly de-sensitized by the saturation of a lethal concoction of sex, violence and thrill-seeking fame worship.
Superficially, the film is presented as the very thing it seeks to deconstruct and indict, using M & M as our entrance into its reality, and following them on their bloody journey. The film ironically uses them to symbolically destroy the system that hyped them and their evil, NOT to endorse their murderous natures and actions but to show how it is evil and harmful in its own way, and essentially no better.