Requisite link directly talking about this:
The success of nonviolent civil resistance: Erica Chenoweth at TEDxBoulder https://www.youtube.com/watch?v=YJSehRlU34w
Erica's original hypothesis was that violence was more successful, but was convinced to do research on the topic and found that while it does work, nonviolence on a mass scale is more effective.
The two papers:

https://cani.rootmy.tv/
https://www.webosbrew.org/