What's the worst thing you have accidentally seen???

Twitter is bad now but at least now i don't come across random ass leaked porn videos anymore, when I was like 15 i came across a "leaked video" of two very obviously teenager having intercourse Infront of a LITTLE GIRL, i reported it but I'm not sure if it ever got taken down by Twitter mods or the account itself just deleted it, now as an almost 20 year old i wish i contacted the police, i truly hope the little girl is okay i can not imagine living in a home where my older sibling have sex with their partners in front of me with no shame. I remember that they were straight up yelling at her because she didn't understand what was going on and was trying to play, I hope that girl is okay :(