I dispute your contention that it's a grassroots thing, that's one of the most astroturfed political campaigns I've ever seen. It's a formula: minor right-wing celebrity announces they're going to city X to 'clean it up' or highlight some deficiency, makes a bunch of posts about it on social media announcing their itinerary, inevitably attracting some opposition from annoyed locals. Then they livestream the local opposition and say 'look how unreasonable these people are, #walkaway.'