Historical timeline for April 22

At least 26 people are killed in a terrorist attack on a group of tourists in Pahalgam, Jammu and Kashmir. The Resistance Front (TRF), an offshoot of the Pakistan-based militant group Lashkar-e-Taiba claimed responsibility for the attack.

Four police officers are killed after being struck by a truck on the Eastern Freeway in Melbourne while speaking to a speeding driver, marking the largest loss of police lives in Victoria Police history.

The Paris Agreement is signed, an agreement to help fight global warming.

Fox News host Sean Hannity offered to be waterboarded for charity in order to prove that it did not amount to torture, though he did not follow through with it.

Japan's Prime Minister Junichiro Koizumi apologizes for Japan's war record.

Eighteen-year-old Stephen Lawrence is murdered in a racially motivated attack while waiting for a bus in Well Hall, Eltham.

A series of gas explosions rip through the streets in Guadalajara, Mexico, killing 206.

Optical fiber is first used to carry live telephone traffic.

Pan Am Flight 812 crashes on approach to Ngurah Rai International Airport in Denpasar, Bali, Indonesia, killing all 107 people on board.

Chicano residents in San Diego, California occupy a site under the Coronado Bridge, leading to the creation of Chicano Park.

The first Earth Day is celebrated.

British yachtsman Sir Robin Knox-Johnston wins the Sunday Times Golden Globe Race and completes the first solo non-stop circumnavigation of the world.

The formation of the Communist Party of India (Marxist–Leninist) is announced at a mass rally in Calcutta.

American Flyers Airline Flight 280/D crashes on approach to Ardmore Municipal Airport in Ardmore, Oklahoma, killing 83.

Red Scare: Witnesses begin testifying and live television coverage of the Army–McCarthy hearings begins.

Korean War: The Chinese People's Volunteer Army begin assaulting positions defended by the Royal Australian Regiment and the Princess Patricia's Canadian Light Infantry at the Battle of Kapyong.

Arab–Israeli War: The port city of Haifa is captured by Jewish forces.

World War II: Prisoners at the Jasenovac concentration camp revolt. Five hundred twenty are killed and around eighty escape.

World War II: Sachsenhausen concentration camp is liberated by soldiers of the Red Army and Polish First Army.

World War II: Operation Persecution is initiated: Allied forces land in the Hollandia (currently known as Jayapura) area of New Guinea.