hayran
Ride The Lightning
i can give dozensgive an example bro
these come to mind, similar profile and pathology to cadaan shooters.
main difference you notice is that these 3rd world shooters are usually military/police.

Woo Bum-kon incident - Wikipedia

2022 Nong Bua Lamphu massacre - Wikipedia
Kampala wedding massacre - Wikipedia
the funniest part of your post is when you mention latin america, literally the most violent part of the world i wont even bother with that. mountian of mass shootings and serial killers