Imagine a counter-factual world. A world where let's say there was a foreign force in Louisiana (I'm just improvising here). This force is there to protect foreign Ambassadors and other high-level tight asses.
Well, let's say it's been kind of topsy-turvy lately in the streets of major cities in Louisiana, lots of violence and bad shit happening everyday. And well, there's an "incident," this foreign security detail is involved in a bloody shootout and a bunch of people end up dead. A new family - father, mother and little baby are shot up and burned to cinders in a bullet-riddled and combusted vehicle.
Let's just say the locals are up in arms. A lot of bad feeling all around. People saying something must be done. Then it turns out that a couple of years ago, a special order was passed, (unknown to the locals) that this security detail and in fact, any other foreign contractor in country is IMMUNE to any Louisiana LAW! And well, on one level the mad conception of the whole thing is fucking perfectly beautiful for the foreign occupiers. For the locals not so good. Who could imagine such a world?