Israeli Knesset chose April 13 as the official Holocaust Remembrance Day.
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Crusaders from the Fourth Crusade broke through Constantinople's walls and entered the great city.
The Zimbabwean dollar was suspended indefinitely.
Project Starshot was announced by Yuri Milner, Stephen Hawking, and Mark Zuckerberg.
Cardinal Bellarmine condemned Galileo for stating that the earth revolved around the sun.
UK Prime Minister Boris Johnson apologized for hosting a party during the height of COVID-19 lockdowns.
