Being exposed to this violent environment/habitat contributes significantly to the behavior of the person witnessing it, as it is what they witness around them. If you've ever heard of the term "copycat" you'd know that it is based off of human adaptation to follow others when our brains are still developing to figure out who we are individually. That's why growing up in a good home environmental area is so important as it influences the way you perceive life.
The reason for this is because if we are subjected to violence like it’s normal than we would grow up thinking this is how things in life should be then the cycle continues with the children growing up and raising they’re children in the same environment with the said violence
