Forty-three people were killed in the Detroit Riots, one of the worst riots in US history.
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The Chinese Communist Party was founded in Shanghai.
NASA announced they had found 'Earth's bigger, older cousin.'
Benjamin Franklin sailed from England back to the US to work for a Quaker merchant in Philadelphia.
Pete Everest became the fastest man in the world.
Inventor William Austin Burt patented the typographer, also known as the typewriter in the US.
