Feeling unsafe in my home state for 24 years

I was riding in the car with my Father driving when suddenly a white Mercedes accelerated at full throttle through the oncoming lane to brake-check us to a complete stop. Upon reaching a complete stop the attacker got out of their vehicle and began yelling racial slurs while threatening to beat us up. After a slight back and forth, the attacker was about to come forth before I stood up, made my size apparent, and stated that I was a powerlifter. In response, they got back in their car and floored it before even putting their seatbelt on.

Despite knowing that I had a very high chance of winning a physical altercation due to my history, I now no longer feel safe anywhere I go. I can no longer comfortably drive with my windows down or go anywhere without a clear escape/fight plan. I have also lost many of my "friends" that ended up blaming me for the incident and vilifying me for my response. After living in my state for 24 years, I have gone against my best wishes and have decided to move to another country.