Parent Bullying

I just want to vent my feelings here because I have no one else to go to. My sister and I were just having some laughs (laughing can extend your lifeline) and my one told us to be quiet. We kind of tuned it down but we weren't laughing that loud. Suddenly my mom shows up all angry looking like a mean red bull. She yells at my sister and I and makes this punching movements like she wants to kill us. She hits my sister's neck and pulls her hair and I sit and cower in my chair. She moves next to me next and she punches me. I all scared and I'm waiting for her to leave so I can lock the door and get as far away from her as possible. She finally leaves and but she suddenly comes back and tells me to open the door and I don't want to but she's like OPEN IT RIGHT NOW!!!!! So I open it and I'm holding a pillow like it's my life and she punches me again and leaves. I lock the door again and crying and playing loud music so nobody loves me. I'm playing Welcome to my Life by Simple Plan because they have the most accurate songs about my life. I DON'T KNOW WHAT TO DO ANYMORE. :(