Martin Luther King Jr. was assassinated.
He was shot at the Lorraine Motel in Memphis, Tennessee, by James Earl Ray.
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Bill Gates and Paul Allen founded Microsoft.
Jack Ma founded Alibaba Group Holding Limited.
US Congress released a US flag that featured 20 stars and 13 red and white stripes.
Adolf Hitler formed the Schutzstaffel, the infamous paramilitary organization known to most as the SS.
NASA's Challenger Space Shuttle was launched from Florida on its maiden voyage.
