This is probably not the kind of response you want, and it’s going to be a serious downer for everyone, but the first person I thought of was Kathy Change:

en.wikipedia.org/wiki/Kathy_Change

Thankfully, I was not a witness to it, but I was working for Penn at the time, and I remember passing her dancing at 34th and Walnut many times.

Like almost everyone else, I paid no attention to what the dances were protesting. When I found out about her concerns after her death, it seemed like such a tragically doomed effort even back in 1996.

Of course, now we’re all hopelessly burning the entire world down, and I still don’t really expect anything to change.