At least, I hope it's a bug...

[Spoilers ahead]

Discovered the Zhentarim hideout. Didn't like their vibes so I entered turn based mode and slaughtered everyone in the hideout. It's okay because their criminals and had a literal slave...

Once killing everyone, I leave, and the guy guarding the hideout is immediately aggro. Not sure how he'd know I slaughtered all his friends, but still, him being aggro makes sense.

Kill him and then walk around the burning town, and the Flaming Fist who was mourning her lover/or friend immediately becomes aggro against me...

Weird. I kill her.

Then, I go and find the Tyr/Zariel Paladins, and they're all immediately aggro.

Kill them all. I then go to find Karlach to see if she'd be appreciative, but no, she's immediately aggro too.

I go back to the druids grove, and the tieflings immediately want to jail me or fine me. If I pay the fine, the very next tiefling I'm near wants to jail or fine me.

Were the Zhentarim that cherished that everyone in the game now wants to avenge them?