This fight changed my way of acting in the future!

I was waiting for PE classes to start, and a fight between a girl and a boy started. The girl is very strong, she has everyone by her side and she started hiting and punching the boy. The others held him so he couldn't defend himself. He was being a victim of bullying, you know? If I saw the sceene at time, but when I saw she was alredy running away. I would have stopped it in time. The boy was sitting, crying, in a corner with a girl who I believe that has ataxia (she is bullied sometimes too because of it). He wasn't fine, he had marks of the punches. I wanted to talk to him, but I wasn't brave enough to do it while my classmates were watching. Then I was the WEAK one! I was afraid of bullying too! I let myself down not helping that poor kid, but I won't give up! When we left PE classes to french classes, that boy's class was outside with their teacher. They were all laughig sitting in the benches, but that kid was sitting next to the teacher, on the bench he was, afraid of what others could do to him. He wasn't laughing as his "mates", actually he was almost crying. I stopped and stared when I walked by them, but I couldn't stay there seeing the sceene. But I swear that this kid will have my help! I won't let him have the same end as many victims had, or suffer was I alredy did!
May God bless you and bless that boy!