School shooter Salvador Ramos passed his talking to strangers online, allegedly carrying on conversations rife with threats and aggression, oftentimes aimed at young women and girls. The troubling digital interactions primarily took place on Yubo, an app that features livestreaming alongside large chat rooms called panels. In the month’s before Ramos unleashed carnage inside classrooms at Robb Elementary School, the 18-year-old allegedly posted images of dead cats and quipped about sexual assault and violence, according to the Washington Post. He also shared photos of a rifle he claimed he was…