Was I wrong to beat up my sisters boyfriend? For acting overlly disrespectful in my family house and our household? Was I wrong to defend my family?

Anonymous
This whole ordeal began when my 2nd youngest sister decided to sneak her boyfriend into our house. She hid him and never told our parents about it until my dad later found out.

Fast forward later boom just like that he was part of our family, forget and forgive right? Wrong. Over the course of the months and years. My sister and him have been nothing but toxic in the family house. The amount of drama and problems they both have caused. The first time I ever had an issue directly with him was when he was yelling at my sister, I could literally hear him yelling through the wall and was being very loud whilst I was trying to sleep in the middle of the night, I confronted him about it and this commotion woked my parents up.

He has stayed with us for 5 years at this point. I told my parents hundreds of times before that I no longer want him living here as he was parasitic, acting like he owns the place. Playing loud music which waked me and the neighbours up. I was furious this time as I and my parents had told him off, more than several occasions. And he has been nothing but disrespectful while staying with us.

Today of all days I awoke to him yelling once more, this was because he broke his bong which he smokes weed from and decided to yell all day while my parents were away from morning until night. This time I was boiling with rage. I confronted him once more, and he had the audacity to try to start a fight with me when I told him this wasn't his house and merely still a guest so STFU. He grabbed me and started trying to hit me, I then retaliated with full force and hit him so hard he fell over and I just kept punching his stupid face in. My youngest sister was crying and pulled me off of him, he tried his luck again, so I got him in a headlock and suffocated him. I asked if he was done yet, he was done, so I let him go and he still tried to act tough afterwards. Later on my parents kick him and my sister out. My sister who is with him still defended him to this day.
Was I wrong to beat up my sisters boyfriend? For acting overlly disrespectful in my family house and our household? Was I wrong to defend my family?
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