wheeler: the ability to disagree amicably is an art much in jeopardy. >> wertheim: in 2016, when ted wheelermayor, portland was placid. he's now presiding over a suddenly pugnacious city. >> wheeler: excuse me! excuse me! >> nick fish: there were things said about the mayor's mother that should never be said in any public forum. >> wheeler: where i think we've gotten a little sideways as a culture, is people take it very personally if you have a different perspective, or a different point of view. i would just say we need to lighten up. >> wertheim: you say lighten up, but across the street from where we are, we-- we've had protests, and counter-protests, and riot gear. what's going on in portland? >> wheeler: absolutely, sure. well, portland has a long history of protest, and counter- protest. and we are a progressive community. and as a result, there are some very far-right organizations that like to come here, and they like to protest. >> wertheim: wheeler calls the targeting of portland by white nationalists an attempt to "poke the bear." this is what the bear looks like here. first thin