Tribalistic Encounter

Heyy yall so here the thing right i was in Town(Bulawayo) i was doing random rounds in town you know and we entered this mall in town near mbali Mall so i had someone i knew inside a specific shop inside the mall so i was with a friend of mine and we were just chatting then this woman entered the shop so we greeted her "mawera sei" and she said dont greet me in that language and we just kinda brushed it off and then she started her amashona hee we are the one pollluting bulawayo,hee we finished places in good schools in byo,heee we are also finshing the places in UZ,Polythecnic,She even said if she had the power she would make bulawayo a country and restrict all shona pple from entering and stuff and restrict many other and you know as someone who was partially offended we started to argue with her and she blatantly threatening us saying heee shes a CID she can make us disappear and i didnt really care about her threat then the shop owner whose a good friend of mine signalled us to stop arguing with her and let her leave.Personally it didnt bother me as such since someone whose lived in byo as a shona for 16yrs and have never experienced tribalism i just imagined if she had encountered someone who was visiting byo they would think everyone is a tribalist and im also disappoint that in this day and age someone has that kind of think