Pit of bodies?

Haha if this is a troll post then bravo but your statement is pretty racist. Why would you assume middle eastern people have a custom of just chucking dead bodies into a pit? But if you are serious,yes it was a pit of bodies but the pit has significance as a metaphor depending on who you talk to; personally saw it as a metaphor for the lack of compassion and general ignorance that most have over the daily killings of middle eastern people. No one talks about it and no one of authority investigates. That's just what I Go with but you definitely don't have to listen to me or anyone else
...but if this is a troll post then I wasted a lot of breath. Cheers have a good day :)
Im Cherry. Yes you are.

Since this movie takes place in a very stylized world, it's probably just to show how far the society in Bad City has gone in terms of social decay; how disposable life is there.

I must have seen an edited version or something because I watched on netflix and didn't see any pit of bodies.

The metaphor for human life being "disposable" was fairly obvious - to the point of being heavy-handed. We don't see any police investigating the murders, and no one telling people to stay off the streets. People are just found dead and unceremoniously dumped somewhere.

Within the film's universe, I took it as either most of the townspeople being too poor to afford burials and resorting to mass graves (but why not cover them up with a bit of dirt at least, instead of leaving them out in the open?), or them being her victims (which in no way explains why they're left out like that, unless it's to give the viewer an idea of the extent of her influence?).