It's a moving letter, I've read it and I actually agree with the statement but having a personal vendetta isn't exactly an ideal.
Nevertheless, it doesn't really matter if they are idealists or not if it eventually pushes for a change. Woodstock was a for-profit music festival that turned into a cultural icon. As someone else in the comments said, probably Rosa Parks never meant to start a revolution.
When I say they are nihilistic, I don't mean it as an offence. I do agree that "it doesn't matter", the market is not working as a place to invest into promising companies, it's simply a gambling with extra steps and I enjoy watching many classical gamblers being destroyed. I also don't trade any stocks, I don't own any publicly traded stocks.
Rosa Parks was, as I understand it, a carefully planned stunt, which happened to get the media traction necessary. There was another person who did the exact same thing a short time before RP did, but that person was, IIRC, punished and forgotten.
