The sad fact for some is that because they get pushed around (by co-workers, boss, partner etc.) that they feel entitled to do the same to others for a momentary sense of empowerment. Of course, that moment is fleeting. It doesn't speak very highly of a person who acts in such ways.
I reckon, should you come across them, leave them...but then, at that point they might be polite and defferential. It's a hard one. Do we want to sink to their level or be the people we are naturally? Hmm. 🤔