They were kids too. 5 to 6 years old. At that time I think kids don't know they are doing something wrong. They learn from their parents. I was bullied by three groups/people separately- two boys of my age, one girl (1-year elder than me), and a girl (2 years elder than me). I had told my parents about this and they just joked as if I am shy and I'll adapt. So I am upset with them till now for this thing.
each to their own i guess...
I am more of a consequentialist...that is it is the consequences of one's actions that is the basis to be judged about the rightness or wrongness of such action
sorta like the ends justifying the means...and thus if the consequences of such actions involve (at least to someone such as yourself) great distress, pain, emotional damage I don't think i can forgive that...regardless of age...