Let's go back to the 80s when the Soviet Union was still a thing, indoor malls were at their height, and the dystopian near future wasn't usually full of zombies. from that early 80s mindset, imagine the world of somewhere around 2020...
The environment isn't so good. In fact, there was probably a brief nuclear exchange some time in the past decades. And an economic crisis or two. Things aren't all that bad, though. Rampant consumerism still abounds, and this guy (or his clone) is still President:
Megacorporations helped America (the world actually) out of those crisis with a leveraged buyout--a sponsorship. The Soviet Union was bought out, too, only over there in USSRtm, they offer consumers a planned community with a "Golden Age of Communism" theme. In the good ol' USA, some rednecks, religious cults, and survivalist nuts stick to the environmentally-damaged rural areas (think Mad Max meets Winter's Bone), and some wealthy folks can afford walled enclaves meant to replicate idyllic suburban life of the 20th Century with protection by real police, but most people huddle around the decaying industrial city cores in neon-lit arcologies that combine shopping and living in one. Malls.
These Malls need protecting and that's where the PCs come in as deputized corporate security officers safe guarding the 21st Century American Dream!tm from all sorts of threats to peace and prosperity: trigger-happy poli-clubs, youth gangs, subversives, and consumer products run amuck. Think Shadowrun with less punk and less cyber. And presented as a Nagel painting.
So this is American Flagg! or Judge Dredd (with more of an MTV aesthetic), influenced by any number of 70s and 80s dystopian films like Rollerball or Robocop, mostly played with the black humor of the latter. Literary sources like Shockwave Rider and Stand on Zanzibar by John Brunner or some later Cyberpunk works will also be informative.