This is whacked up! Family Abuse please read and help?

Today was the last straw. I am moving out because I'm officially done with my mom and little brother. They can talk all the sh*t they want and its okay, but if I say anything I'm awful, I'm horrible, I get sworn at in Spanish by my mom. I told myself, and I even told my mom that I can get my a** kicked, throw no punches or kicks, and she'll blame me for the disturbance. Well today, my words came true. I wished my grumpy little brother a good morning, and he was just all negative, not really paying attention. He started to yell, and say he needed to go, and I said okay, that its alright, that I'll eat somewhere else, and he can eat where he's at. Well he kept on yelling and saying stupid crap. He threw controllers, and I slapped his arm saying he can break something. Well I told him I'll tell our mother. Instead of listening, she was 100% on his side. I got pissed and yelled at them. My brother decided to push me, so I push him back and he threw several clusters of fists at me. My mom was stupid enough to shield him which she gotten hit several times by him. I grabbed her and tossed her out of the way and took blows for her. while getting blows from her too. I yelled at him saying he hit her. Nope according to my mom, I hit her and I deserved being hit by him. She would defend my little brother who is 115 to 120 pounds heavier than I am (he's 280lbs), taller by a few inches (he's 6'1). I'm there crying out of frustration and she yelled at me. I yelled back and slapped a chair out of the way and cried. She mocked me and made fun of me. She threatened to punch me and was about to until I caught her fist and said "Hit me mom!" and bashed her fist against my head til my forehead had welts. She decided to throw a show and pretended to suffocate. At first I was terrified, trying to get her to breath. But it was an act cuz she tried to call my dad but he never answered. I told her I hated her and I'm moving out. I called my father who appears to be the only one who ever listens to me and told him I'm moving out, and if my little brother decided to act up, I'll defend myself with a blunt object. He told me he was sorry for me and good luck. My mom calls him and starts to lie. The funny thing is, I'm sore all across my torn shoulder (torn rotator cuff) from where I received blows from my brother and mom, my forehead is swollen from me making my mom hit me harder, and she's there making it out that I'm psycho and she's planning on calling the police and showing them her bruises that she received from my brother and blame it on me. Funny thing is, my fists are fine, it's theirs that are sore for punching me and what not and my brother even leaves her a voice message saying his hand might be broken.. Give me a break, why do they hate me so much? Have any one been abused similarly?