On November 7, Michał Oksiński, a 24-year-old Polish man, shot and killed his parents and sister, then opened fire on passersby in central Kraków. Six people were killed and 15 were injured. Police shot and wounded Oksiński, who later died at a hospital. Polish authorities have called the attack an act of terrorism, but the gunman’s motive remains unclear. Oksiński left no note or manifesto explaining why he carried out one of the deadliest mass killings in Poland’s modern history.