Tragic death of some mathematicians

Tales of Miletus - asphyxiated by the crowd when leaving a show.
Archimedes - murdered by a Roman soldier.
Eratosthenes he committed suicide, starving himself.
Hypatia - cut by a group of exalted men during a mutiny in Alexandria.
Évariste Galois - killed in duel.
Pythagoras - assassinated in Tarento during a revolution.