Buy a gun or vehicle? Because if you are at the mercy of insane, irrational, and potentially violent actors there is nothing other than force which can guarantee safety. They will call it unfair that their victim fought back and that three or more on one went to the one. Because fairness is a solipsistic, narcissistic standard that cannot be objectively defined. It is more a rhetorical device than anything logic related as you can argue any standard as fair or unfair.