The vast majority is definitely very reactionary. I can’t say if they are still aligned with Bolsonaro since he has been losing popularity a lot for some time now, specially because of how he handled the pandemic. But I would bet they are Bolsonaristas, even tho some of them might not like Bolsonaro himself anymore.

I know there is a very, very small minority of leftists in the military police force, but they have to keep their mouths shut not to be extremely harassed, fired or worse.