"Nonviolently showing up"? I might or might not agree but let's face it, most of us won't even bother to show up at a voting place on election day. People just don't care. Maybe they'll kvetch to their acquaintances about how bad the other side is, but overall there's a lot of complacency. Similarly, you don't need to arrest corrupt politicians, you just need to not vote for them. Support a primary challenger if they're incumbents. That kind of thing. But of course that's not going to happen either.