If not being physical threatenend I prefer to back off. I can defend myself, but would not chase anyone, especially in Thailand.
Working as security in my younger days, I learned how quickly a situation under controll could suddenly turn on me as a security where bypassers especially the drunk ones, woud intervene. I have seen this happens so quick in Thailand, where one drunk tourist have an argument in the street, ans suddenly 4-5 others jumps in and kick the <deleted> out of the "stupid" foreigner.