kids are cruel and usually lack any form of empathy, which is why they are "more direct". Empathy is taught later on. But, taking pictures, sending dickpics, cat calling you are manners and those should have been teached by their parents. This is vile behaviour and those parents should know what their children are doing at school, maybe partially because of the lack of parental education. I am sorry you had to go through that and feel that helpless about it.