Global climate movements have espoused nonviolence, but some are adopting more radical tactics in light of the increasing threats posed by climate change.
Civilian peacekeepers are trying to stop violence before it starts.
There are individual activists and political groupings who believe violent action is legitimate and use the circumstances to actively drive such behaviour.
Scholars who study policing explain what they have found that could help reduce police prejudice and violence.
Remaining nonviolent despite enormous provocation made it difficult for the regime to depict the movement in a negative light