Am I the one in the wrong?

So the other day I was on the phone with my uncle and he said a kind of mean joke about his wife, my aunt, so I was defending her (btw his wife is black and we are a brown desi family, this information is necessary) but while I was defending her she goes “oh don’t worry I’m used to YOUR family saying stuff about me so this is nothing new to me.” She was talking about my immediate family in this case and we are the only people who have ever stuck up for her from the rest of my family that lives back in pakistan, we have never said anything bad and honestly my extended family has never said anything bad either (my extended fam may have said something bad in the beginning but that was before any of me or my siblings were even close to being born and my parents would defend her then) besides one other aunt who always get berated and into trouble if she ever says anything bad. My aunt has put this idea in her head that we all hate with no actual reasoning. Anyways I knew she was trying to start something right then and there so I tried to call her out on it by telling her “how is that even prevalent to this conversation?” Bc the conversation wasn’t even about her being black or my family or anything. She ignored this family and continued going “you know the other day when *insert my nephews name* was here he looked at his dad and said “daddy your brown” and then he looked at me and didn’t say anything and I realized he has a deeper understanding about color than any of you will ever have.” My nephew is 2, half white and his white side of the family is heavily racists without even realizing it, the amount of racists things they have said to me is honestly unbelievable and she knows they have said these things about both me and her yet she still said he had a better understanding. Also I’m the one who has taught him colors and numbers, I haven’t gotten around to teaching him the color black that’s why he didn’t know what color to call her not bc of her dumb reasoning of him having a better understanding of color than anyone in my family. Also so what if he had called her black? There is nothing wrong with that because she is black, I don’t get mad when people say I’m brown bc I know it’s true and she’s a grown women, if she’s insecure about her color that’s her fault not mine. I got mad at her insinuations towards my family being racist bc honestly it’s been going on for a while now so I told her “no one in this family is racist and we are the only ones who ever defend you and how does that whole situation with my nephew show that he has an understanding that my siblings and I never will have?” She didn’t expect me to talk back and got shocked and tried to say more but I was pissed and told my uncle “bye uncle, I’ll talk to you later” but he wasn’t letting me hang up so I continued to tell him bye until I got annoyed and told him “I’m saying bye you could either say it back or I’m going to hang up” bc I didn’t want to hang up on my uncle bc that’s rude but he gave me no choice so I said bye one last time and hung up the phone. Now they are mad at me, am I the one in the wrong?