The first computer virus is released “into the wild”. Elk Cloner was created by 15-year-old Richard Skrenta as a practical joke.

On “Bloody Sunday”, British troops kill 13 unarmed protesters. It was one of the most significant events of the Northern Ireland conflict.

The Beatles give their last public performance. The concert was played on the rooftop of the Apple Corps building at 3 Savile Row in London.

9,400 people die in the deadliest maritime disaster in history. The “Wilhelm Gustloff” was sunk by a Soviet submarine during World War II.

Adolf Hitler becomes Chancellor of Germany. The “Machtergreifung” marked the end of the Weimar Republic and the beginning of the “Third Reich”.