Sorry you are so upset, but one can avoid these situations if you don't get really drunk or stoned and then scare people with unpredictable antics. There are lots of guns out there. My house has been broken into while I was asleep. I can understand the man's fear. You don't have any idea what may happen.
Another point, Dearborn has a huge Arab speaking population. Would it have been so provocative if the dead woman wore a veil?
Also, several people tried to help R after she hit a parked car but she wandered off. Her bad choices created this entire sad situation.