AI insanely aggressive?

I swear sometimes it feels like the devs could only code one set of AI behaviors for everyone and they went with the terrorist one, because why tf does every single enemy fight with a complete disregard for their own lives. I was just playing Valley of the Dolls and a random guard starts taking potshots from outside. I arrest a civilian, look up and see him charge straight through the door, past all my teammates, right at me and shoot my point blank. Why? He's not a suicidal jihadist and yet he acts like he's fighting with Allah over his shoulder. It's not just this map either, on the hotel map I had someone rush into a room full of SWAT, completely ignore everyone and just bumrush me with a shotgun. Is this normal? Does anyone know any mods that can fix this zealotism in everyone?