When I was no more than ten years old, I was sexually assaulted by a classmate. We were told to stand in a line, and I realized that I had forgotten something at my desk. I turned my back on my peers to go and fetch whatever I forgot and I felt a smack on my bum. I turned around in fury to see three or four boys, all my age, sneering and sniggering. One of them made a grab for one of my breasts, at which point I turned away, went to my desk and then returned to the line (as far away from the offending boys as possible).
This enraged me enough, but what shocked me the most was that my (female) teacher saw the entire thing and did nothing but smirk slightly. Bear in mind that this was less that a decade ago. I’ve never breathed a word of this to anyone until now.