It's easy to say that violence is never an answer -- and I sympathize with the sentiment philosophically -- but most of the people I've talked to who say this have never encountered a real predator. It changes everything. Most people's experiences with bullying or victimization are in grade school, and if you're fortunate enough to be a college educated professional as an adult you probably have never been in a fight or attacked as an adult.
But it can really alter your outlook to be mugged, raped, or otherwise attacked -- especially if it's at gun or knife point. For some people the experience makes them generally more fearful and cautious, and it can even change their ideology.
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