Those are not mass shootings.
They are confrontations between the police and drug gangs ans/or paramilitary gangs that happen which often result in civilian deaths as a collateral damage.
(This doesn’t mean i support or condone those actions.
I don’t live in a city that has this kind of operation, so i don’t have a more elaborated opinion on them, but they seem extremely foolish.)
There were some mass shootings in brazil in the last years
A few are done by citizens, the Realengo school shooting is the most famous one and inspired by the american ones and with some influnce from 4chan and/or other misogynist platforms.
There are also the mass shootings perpetrated by the police, called ‘chacina,’ where several citizens are executed, usually it happens because a police officer was killed or another similar reason, like a vendetta or payback.
E.g. Chacina da Candelária (one of the most famous):
Chacina no Complexo do Alemão (triggered by the killing of two police officers):
The comunity decided to make it US centric and the moderators agreed. I posted a story about a mass shooting outside the US, several users flagged it as off topic, then Duketrout removed my post and moved it elsewere. When I asked about it Orenwolf supported it with: