Non-violence is not passivity in any shape or form. Non-violence is the most active force in the world. Non-violence is the weapon of the strongest and the bravest. The true man of God has the strength to use the sword, but will not use it, knowing every person is the Image of God. Non-violence is the greatest force at the disposal of humankind. It is mightier than the mightiest weapon of destruction.
Literally speaking, non-violence means not-killing...but it really means that you may not offend anybody... This is an ideal which we have to reach and it is an ideal to be reached even at this very moment, if we are capable of doing so. But it is not a proposition in geometry, it is not even like solving difficult problems in higher mathematics—it is infinitely more difficult...
You will have to pass many sleepless night, and go through many a mental torture, before you can even be within measurable distance of this goal... Under the rule of non-violence there is no room for organized assassination, or for murders openly committed, or for any violence for the sake of your country...or even for guarding the honor of people that may be under your charge... This doctrine tells us that we may guard the honor of those under our care by delivering our own lives into the hands of those who would commit the sacrilege. And that requires far greater courage than delivering blows.
~ Mahatma Gandhi (from Essays and Reflections on his Life and Work)