Protestors took to the streets in Hong Kong after the government announced a ban on face masks.
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Pope Benedict XVI's butler, Paolo Gabriele, was convicted and jailed for 18 months for leaking confidential documents.
'The Jazz Singer' was released. It was the first motion picture with pre-recorded dialogue, revolutionizing the movie industry.
The first American Chess Congress started in New York.
Dr. Albert Sabin announced his oral vaccine against polio was ready to test.
Instagram was launched and gained 25,000 users on its first day.
