Original: Construction of the memorial began in 1966 (during Soviet times) in response to the 1965 Yerevan demonstrations during which one million people demonstrated in Yerevan for 24 hours to commemorate the 50th anniversary of the Genocide.
Simplified: In 1965 to commemorate the 50th anniversary of the Genocide after a million people demonstrated for 24 hours; the demonstrations are now known as the 1965 Yerevan Demonstrations.