The film's version of the city of Casablanca is Steel Harbor, a desperate place for dark, troubled, and lost characters. It's a violent, sexually overcharged war zone, not unlike how Trump has depicted all of our inner cities. As in The Running Man, the government here is authoritarian and cruel, but even more nakedly fascistic in its fashion sensibility.
So while Barb Wire might inhabit the far-out, futuristic world of 2017, spiritually, at least, it's stuck in 1942, and the romance of a world at war and star-crossed lovers trying to reconcile their ideological beliefs with their personal passions. It even has Udo Kier as Barb Wire's sidekick "Curly," a bald-headed gent who looks like a cross between Casablanca's weaselly Peter Lorre and a sentient, six-foot-tall penis with eyes.