AITA for making my BIL cry because he wouldn’t stop making fun of my hair?

**tl;dr at bottom**<br><br>I (23F) got married this summer and my husband (25M) and I went straight to our honeymoon. We got back about a month ago and we’re finally starting to get back into work and stuff.<br><br>Before we left I had pretty much the whole family over for dinner. My MIL and BIL came too, and they were being their usual shitty selves.<br><br>My MIL kept telling me how I was finally a part of their family so I could do whatever I wanted. (I have long, curly hair. I am caucasia.) So I went all out. I dyed my whole head hot pink and got it braided in some really nice Senegalese braids.<br><br>MIL and BIL were shocked lol and they both went silent. BIL kept looking at me and making faces. MIL asked why I looked like a bantu and I explained that the braids were something from Africa that I thought looked pretty. This sent BIL into a fit of laughter.<br><br>He wouldn’t stop making fun of my hair. He kept pulling on it, calling me a black woman, a nigger, and he even said I looked like a dog.<br><br>MIL noticed he was going overboard and told him to be nice, but she was also giggling about it. I started to feel really shitty and bullied.<br><br>I asked them to leave but BIL said no, he was going to pull my dreads to see if they would actually fall out. He did it, and I’m not gonna lie, it hurt. He pulled so hard some of my hair fell out and he laughed again.<br><br>I got up to go into the kitchen and he grabbed my hair again, pulling me to the ground and then dragging me across the whole dining room.<br><br>He was pulling on my hair so hard it was bringing tears to my eyes. I did everything I could to get him off me but he was too strong. I finally grabbed a steak knife that was on the table and jabbed it into his face.<br><br>He let out a pretty loud shriek and he fell onto his face grabbing his cheek. MIL was shouting at me, saying I couldn’t do that, I didn’t even know if he was alive.<br><br>I still had the knife in my hand and she told me to put it down or she would call the police. I didn’t want to get in trouble so I did it.<br><br>BIL was still on the floor bleeding. MIL was asking if I had broken his teeth or his jaw but I don’t think I did.<br><br>He eventually got up and limped out of my house with his head down. MIL followed him out and she looked at me the whole time.<br><br>After they left I called my husband and told him what happened. He was shocked and asked me what was going on with his family. I told him how BIL had been tormenting me and bullying me for months.<br><br>He was very quiet for a while before I heard him take a deep breath in. “I’m calling to tell them not to come over anymore unless invited. I’ll see you tonight and we can talk about it then.”<br><br>It’s been a while since then and MIL and BIL have not come over since. He actually hasn’t left the house since then either.<br><br>MIL called and told me that BIL was crying about me and she was very upset that I hurt him so badly just for pulling my hair.<br><br>I thought pulling my hair and dragging me across the floor was enough to warrant being stabbed in the face but MIL doesn’t think so.<br><br>AITA?<br><br>**tl;dr:** MIL/BIL came over. MIL let BIL bully me and drag me across the floor by my hair. I stabbed him in the face. Now he won’t leave the house and hasn’t stopped crying since.