Need help with a Trump supporter at work.

Okay, Im 22 and work retail and I sell silver. We have customers that come into the store everyday to their silver. One of the customers is a a$$. He's around late 50s and is dating a 23 yr. One day outside of work we got into an argument and he drove away when I tried to fight him. Another time after the incident he came into the store and tried ragebaiting me. He was successful and I ended getting into an argument and called him out in his Trump support and love for younger woman (little girls). He tried having me fired even tho he stared the incident. But since then my manages still let him shop and told me to leave him alone, but he still persist. He'll linger around my area and make small comment about me for me to hear. But he does it in a way he get in trouble but only I can if I retaliate. I would get a another job but no one is hiring in my town, and I dont have a vehicle atm. I dont know what to do, I fear I might hurt him if it keeps going on, but if I do I know for sure he'll call the cops. Ps this is it NM