I'd put it at
environment: 10%, low character/evilness: 90%
There is no justification for acting like an animal, brutalizing innocent people.
Where does the low character come from? Is it race?
I do believe it is environment. Raised with no father figure and no real hope of success.
I’m not saying they are not responsible for their state. I’m saying we could do something. But to be clear, I’m not talking about the government, other than them actually enforcing the law. Our strength is not in our government. Our strength is in our individual character - collectively. And when everyone spends all their free time in selfish pursuits, well, it will not last. People get the greatest joy from helping others. It is a two sided coin that seems to remain in our pockets.