Martin Luther King Jr. was assassinated.
He was shot at the Lorraine Motel in Memphis, Tennessee, by James Earl Ray.
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Adolf Hitler formed the Schutzstaffel, the infamous paramilitary organization known to most as the SS.
New York City's Twin Tower World Trade Center was officially opened.
NASA's Challenger Space Shuttle was launched from Florida on its maiden voyage.
US Congress released a US flag that featured 20 stars and 13 red and white stripes.
The Declaration of Breda document was issued by the exiled King Charles II of England.
