Moral justification is a powerful disengagement mechanism. Destructive conduct is made personally and socially acceptable by portraying it in the service of moral ends. This is why most appeals against violent means usually fall on deaf ears. ↗
It's like Brad Pitt for us. You might not like blond men with pretty features, but c'mon, it's Brad. You're not going to kick him out of bed for eating crackers. ↗