Is violence or destruction ever correct?

In the introduction to Thich Nhat Hanh's Zen Keys, Philip Kapleau suggests there are times when one can or must rebel. > ... In this type of creativity ow intuitive wisdom and joy are naturally brought into play. > All this does not mean, of course, that attempts at bettering working conditions and making work more meaningful, such as we are witnessing today as a reaction against robot-like mechanization of the workplace, are worthless. But for a worker constantly to resent his work or his supeliors, for him to become sloppy and slothful in his working habits, for him to become embittered toward life-these attitudes do most harm to the worker himself and serve little to change his working conditions. When it's time to work one works, nothing held back; when it's time to make changes one makes changes; **when it's time to revolt one even revolts**. In Zen everything is in the doing, not in the contemplating. He doesn't elaborate. I found the line surprising. But Buddhists fight in Myanmar. Is it ever necessary to deviate from non violence?