This could make a really interesting discussion. It seems like women suffragists in Europe were a lot more radical than ones in the US and Canada - breaking windows, arson against homes, churches,and businesses, cutting telephone lines, using letter-bombs. But I don't think any of what's being discussed involves vengeance. Vengeance is about getting back for things that are past, not about using violence to accomplish change for the future.
Filmmaker Ian Cresswell rigs an HD camera atop a remote-controlled "octocopter" for some spectacular aerial views.