Search Results: anger issues in children

So my sister has this issue.. she's always saying how I'm wrong and always sides with the other person. It's as if she's never on my side or agrees with me, she's a flying monkey and especially sides with my mom and then there's my mom who treats me like a child, ignores me, says mean things and bullies me. She's more like an older sister/friend than a mother at times.

So today I was showing her this trailer for this movie I want to see. She goes "Omg why do you always gotta show me stuff on your phone?" this was in front of everyone in the living room. I just gave her a dirty look and was like "I'm just trying to show you a movie I wanted to see." then later on I was trying to have a conversation with her which she never engages. She always just demands me do stuff for her. We never talk. She always talks to other people but with me. It's just demanding. So I go and talk to her but she's not really talking back. So I'm following her while she's walking away. Then my mom goes and says "oh look she's following me" in front of everyone once again including my sister's friend. My sister's friend smirks and everyone smiles and my sister starts saying something about it. I go and say "why do you always set people up to bully me?" cause it seems like she does cause she always makes remarks like that to me in front of everyone. She never talks to my siblings this way. Then my sister gets stern with me and is like "shh stop trying to argue" this isn't the first time she jumps in and says how I'm trying to argue this has happened a million times. I have developed anger issues and have changed cause of the way they treat me. I just find it annoying cause it's obvious I'm being treated unfair but they ignore everything and act as if it's okay. Did it sound like I was trying to fight or was this a normal reaction? I ask cause I don't know who I am anymore. I find I overreact and I've been invalidated so much that I just don't know.

My boyfriend and I (both latinos) come from a background where we were hit too hard with a household object and both of us think that was too much.

My father would use a belt on me during my very early ages. Practically all the times it was used, he did it in frustration/anger and tend to overdo it to the point I was already crying and pleading for it to stop. He did the same to my younger brother. Long ago when my brother was only 2 years old and nearly dropped a teapot with boiling water, he left a couple bruises on his bottom and the back of one side of his leg was swollen with the belt and he only stopped when he accidently hit one side of his face with it (it happened when my brother was turning around to run).

In my bf's case, it was his mother that used to hit him with a stick or strap. It was pretty much done out of frustration/anger too.

This resulted in my complete hatred towards the usage of corporal punishment on a child, esp if it were my own kid; the person I'm suppose to love, protect, cherish, guide and teacher. My boyfriend only thinks spanking should be done with only the hands but never hard nor ever done in anger. Though his approach is a mild version in comparing to our backgrounds, I still have an issue spanking kids, even with the hands. I also don't agree with his stance that if you don't spank your child they'll grow up criminals.
Now back to my question, shouldn't spanking/hitting a child with a belt, sandals, sticks or any object be classified immediately as assault and child abuse? I definitely think so.