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Here are some articles about Juneteenth and why it should be celebrated:http://www.pbs.org/wnet/african-americans-many-rivers-to-cross/history/what-is-juneteenth/
https://en.wikipedia.org/wiki/Juneteenth
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The Quintessential Americanness of Juneteenth
Why Juneteenth should be a national holiday
The Black American Holiday Everyone Should Celebrate but Doesn’t