On April 15, 2014, Matthew de Grood, son of Calgary Police inspector Doug de Grood, stabbed five young adults to death at a house party in the Brentwood neighbourhood of Calgary, Alberta, Canada. The party was several blocks away from the University of Calgary campus, and held to mark the end of its school year. This incident marked the deadliest massacre in Calgary's history.
HistoryLayer draws the world as it was in any year from 123,000 BCE to
2026. Move the slider and the borders redraw for that year; the map
carries 23,890 events, 12,790 people, 837 wars and 13,183 cities, each
one readable in place. Signing in is optional and lets you keep what
you find.