I 24f, had an altercation with my brother 18m this morning over his dog chewing on a little ornament of mine. I usually keep this little alien ornament on my turning signal, however when I stepped out of the house this morning I found it chewed up near the door. It must have fallen out of my car and landed in the driveway the night before and I hadn’t noticed. My brother happened to be right there so I said hey your dog chewed up my alien. He instantly got defensive and told me he wasn’t responsible for keeping track of my items and that it wasn’t his fault. I got annoyed to because he took no accountability for the fact that my item was destroyed. We went back and forth a it with him doubling down, no apologies or care. I decided to headed towards my car and slammed the gate a bit out of anger just for him to say that I shouldn’t be slamming the gate and that I had no respect for the property. (We live at our grandmas house). I told him to stop talking to me and be quiet, yes I shouldn’t slam the gate but I did have the right to be upset that he didn’t care at all about his dog chewing up my personal items. We then continued to argue again with him bringing it back to the original argument. He said he didn’t have money to replace “a little stuffed animal” and that he didn’t care either. I kept telling him to stop talking to me, to just leave because I was getting more and more angry with him. He in fact, did not leave and instead continued to argue with me over it. I ended up telling him if he doesn’t care about my stuff then I don’t care about his either, and next time he I could care less about being cautious about throwing his things away or not (a few nights before he let me know he had a box of something for target practice on top of the trash can and to not throw it away). He then told me he would shoot my car. Now this is where I got so angry that I ended up kicking his car. I know, I shouldn’t have done this and I probably am the asshole for doing that. But I was tired of his berating at that point and I made a bad choice. However what happened next sent me into tears. He ran over to my car and punched the tail light. The cover piece broke off completely. I yelled at him and started crying. He then told me to calm down and that he would replace it. Stop caring so much because it was a material item. I told him to fuck off and that he was a hypocrite for telling me I shouldn’t care about material things even though he does. After that he picked up the pieces and set them on top of our trash can and again started to argue with me saying that I don’t understand because my dad bought my car and he paid for his himself. To which I replied so I’m not allowed to be upset? It’s still my cat and you just broke the tail light. I started crying harder and just told him to leave because I didn’t want to continue the conversation. So he got in his car and sped off. He later tried to call me but I ended up blocking his number. This was hours ago at this point and I’m still very upset over it. To be honest it wouldn’t have turned into such a big thing if he had shown just an ounce of care and been sincerely apologetic. And since I bought that alien ornament back in December I wouldn’t have expected him to pay for it because i can’t buy it again as it was a seasonal item. I just wanted him to show some care and say I’m sorry. Instead it ended with him punching my tail light. I have yet to talk to him since and honestly dread when we do talk again.