On This Day: June 4th

Eleven people are killed and 56 people are injured during a crowd crush incident outside M. Chinnaswamy Stadium in Bengaluru, India for the celebration of Royal Challengers Bengaluru's Indian Premier League victory.

Protests begin in Poland against the PiS government.

Four people are killed when a Cessna Citation V crashes into Mine Bank Mountain in Augusta County, Virginia.

Death of Giovanni López: Protests over the death of Giovanni López Ramírez, who had died on 4 May while in custody, begin in Jalisco following the release of a video of his arrest going viral on social media, and inspired by the George Floyd protests. Later, these spread across Mexico.

Falcon 9 Flight 1 is the maiden flight of the SpaceX Falcon 9 rocket, which launches from Cape Canaveral Air Force Station Space Launch Complex 40.

The Civic Forum of the Romanians of Covasna, Harghita and Mureș is founded.

The first flight of Ariane 5 explodes after roughly 37 seconds. It was a Cluster mission.

In the 1989 Iranian supreme leader election, Ali Khamenei is elected as the new Supreme Leader of Iran after the death and funeral of Ruhollah Khomeini.

The 1989 Tiananmen Square protests are suppressed in Beijing by the People's Liberation Army, with between 241 and 10,000 dead (an unofficial estimate).

Solidarity's victory in the 1989 Polish legislative election occurs, the first election since the Communist Polish United Workers' Party abandoned its monopoly of power. It sparks off the Revolutions of 1989 in Eastern Europe.