Two suicide bombers attacked paramilitary police recruits heading home after months of training in northwest Pakistan, killing 87 people in what the Pakistan Taliban called revenge for the U.S. slaying of Osama bin Laden.
Thousands of students begin a hunger strike on Tiananmen Square in Beijing. The non-violent occupation of the square was part of anti-corruption and pro-democracy demonstrations. Some 3000 unarmed civilians were killed when the army cracked down on the protesters on June 3-4, 1989.
Pope John Paul II survives an assassination attempt. Turkish right-wing extremist Mehmet Ali Ağca fired two shots at John Paul II on St. Peter's Square. The Pope was seriously wounded but survived thanks to a 5-hour operation and went on to visit his attacker in prison.
The Giro d'Italia cycle race is held for the first time. The Giro is considered one of the world's most important cycle races. Luigi Ganna won the first edition, which went from Milan to Naples and back.