Is it normal i was bullied severely?

Quick warning; this is probably going to be a lengthy post.

Okay, so starting school as a young child was a pretty horrible experience. Due to being Autistic, I was basically a mute and did things a bit slower than most children my age. My peers often harassed me by name calling, shoving me, kicking me, throwing things at me during class, etc.

Unfortunately the teachers were of no help, my first grade teacher didn't seem to like me that much and often singled me out by forcing me to move my desk to the back of the class alone, and she made me face the wall and would tell me to draw or color while she taught the class. Most likely she thought I was extremely mentally challenged (which is false) due to her knowing about my illness. I did actually attempt to follow along on what my class was doing, however if my teacher caught me she would yell at me and order me to face the wall.

Eventually it got worse, I had a boy in my class that wouldn't
leave me alone and I would come home to my mother with bruises and scabs all over my body. My mother often rung the school, asking them what they were going to do, but to my opinion the school did not care and either "punished" the bully by either telling him to not do it again or made him apologize to me, which obviously was not a true apology.

I'll admit I was pretty much a weak crybaby, though eventually the harassment got to me and I started fighting back. Do you know the outcome? Whenever I defended myself againt the person who would punch me and kick me in the dirt I would get sent to the principals office where they made M E apologize to my bully and send me home. I was fed up with being hurt however and continued to defend myself, which would often lead me to being sent home daily. Honestly though my bully could of possibly killed me, I remember once he had punched me in the back of my head and it caused me to pass out cold. Eventually I woke up but I couldn't remember who or where I was, fortunately my father had found me and rushed me to the school office. They were very helpful indeed, the desk lady telling my father she would be back and promptly locked my father and a young child who was attacked and had their memory lost out for 15 minutes until my father gave up and drove me to the GP.

Luckily by then I had recovered my memory, though I had a really sore head. Some of the teachers there would also try to humiliate me, and most of them ignored what was going on.

Now I've graduated school, although I now have an array of mental illnesses such as severe anxiety and BPD, which most likely stemmed due to the treatment I was showed at a young age. I have violent thoughts, and honestly I've contemplated paying my old school a visit by burning it to the ground, or tracking down my bully and shoving a knife under his eyelid.

The first option seems more charming to me though, especially since my friends are actually eager to do it and aid me. Of course I'm not going to do it with people inside, we would do it during nighttime, so obviously I can't burn any children or teachers to death, despite it sounding tempting.