Right. Be the change. But there is just no logic in saying that owning a gun will lead everyone else to become deviants. We will ALWAYS have weapons, to think otherwise is a fairy-tale dream. A nice one, but non-existent. The only change we can impact on our world is responsibility and wisdom when it comes to using them.
Or you could be the lack of change, the 'cause' of oppression and subjugation, because you simply did not have what it takes to pick up that gun, and defend society from a monster such as Hitler.
I say this, truly, with all of the respect that is possible. But if you were in a situation with one of my kids, and I was away, where you could have done something to defend them, and they got killed or injured, I would see you in prison, or branded a coward throughout society as a whole.
Everything that makes you, you, is the result of your Environment (Society, Culture, Family, Friends, Etc), Genetics/Biology (Your brain which makes the mind possible, Inborn diseases such as Down Syndrome, or even Psociopathy, etc), Thoughts (Everything you think affects your mind, and the person you are), Speech (Same as thoughts, but words affect your environment as well), Actions (Same as Speech), and the Elements (Earth, Water, Fire, Wind, Space, and Time).