On this day in 1983, eighteen Tamil political prisoners at the Welikada high security prison in Colombo were massacred by Sinhalese prisoners, the second such massacre in two days.
On this day in 1990, the Supreme Soviet of the Belarusian Soviet Republic declared independence of Belarus from the Soviet Union. Until 1996 the day was celebrated as the Independence Day of Belarus; after a referendum held that year the celebration of independence was moved to June 3.
On this day in 1996, in Atlanta, United States, a pipe bomb exploded at Centennial Olympic Park during the 1996 Summer Olympics.
Also On this day in 2002, a Sukhoi Su-27 fighter crashed during an air show at Lviv, Ukraine, killing 85 and injuring more than 100 others, the largest air show disaster in history.