It happened on… April 21

Russian President Vladimir Putin warns the West against crossing a “red line” in his State of the Union address, as 100,000 Russian troops are massed on the Ukrainian border.

Ukrainian comedian Volodymyr Zelensky wins the country’s presidential election by a landslide.

In Beijing, 100,000 students demonstrate in Tiananmen Square to commemorate Hu Yaobang’s reforms.

After 37 weeks, Michael Jackson’s album “Thriller” drops from the #1 spot on the North American charts, replaced by “Footloose.”

The musical “Annie” opens on Broadway in New York City.

The Beatles complete recording of the album “Sgt. Pepper’s Lonely Hearts Club Band” at Abbey Road Studios in London.

Elvis Presley’s song “Heartbreak Hotel” reaches No. 1.