Terrifying History on Instagram: "On November 2, 2023, Austria was shattered by its worst school shooting in history when a 21-year-old former student armed with two legally owned firearms stormed his former high school in the small town of Korneuburg, just north of Vienna. The attacker, identified by police as a local man who had attended the school but failed to graduate, opened fire shortly after classes began at 9:30 a.m., killing nine students—all between the ages of 14 and 17—before turnin