Those who are self-righteous often act in invidious, contemptuous, and unapologetic ways towards their targets.
*Target would say: "Go fuck yourself! You don't know me, so I suggest you show me and yourself some respect and keep your opinions to yourself. You are right about one thing, I am scared of the world. It's not fair that attractive girls don't like unattractive guys. Its not fair that my boss is a greedy dick who screws me over every week. Its not fair that I was born into a conservative working-class family in rural South Carolina with an authoritarian mom and a deadbeat dad. Its not fair that politicians only care about lining their pockets and pursuing their own partisan agendas instead of making this world a better place. I don't have the time nor the will to listen to your self-righteousness."
*Self-righteous person would respond: "You're right, the world isn't fair. Get over it. And as far as you not wanting to listen to my "self-righteousness"? Well, I wouldn't want to hear it either. Truth hurts."