Ok, so 2 nights ago, someone wrote "Your car is shitty" in permanent marker on my car. I just got into an accident and still have not gotten the dent fixed or the area painted over, but for some reason this irked me. So yesterday, I wrote something under what he wrote. So last night, I am looking out my window and I see someone stop out in front of my car. I walked down the stairs and looked out the window and saw a pretty big guy start to write again, so I snuck out and got behind him. When he turned around, I grabbed him by his neck, slammed him as hard as I could against my car and suplexed him onto the ground. Well, he became unconscious and I called the cops. Anyway, turns out this little punk is 18 years old and I was wondering if he could sue me since I threw the first punch so to speak. All I did was slam his head into the car once and hip tossed him. Well, he didn't bleed much and the good news is that I slammed his head into the already dented portion of my car, so that won't cost me. Am I safe from being sued since he was defacing my property or not?