There's a local businessman I've always respected and gotten along well with. I regularly patronize his establishment.
However, I recently discovered he is also on the "city" council, and in that position he acts just as you'd expect a politician to act.
Some people I know got together and went to a council meeting a couple of weeks ago to beg government to not violate them so hard in one specific way (they are in the right). And he was a total prick to them.
In business, he seems to be honest and respectful. His customers have to be satisfied or they'll go elsewhere.
In his government position, he can be a rude, dismissive jerk because his victims are trapped... until or unless they can shrug off the statist beliefs that hold them prisoner to archators. I do what I can to try to help people discard those archaic and harmful beliefs, but you can't help those who don't want to be helped.