Loving Day
Loving Day is held on June 12. It is the biggest multiracial celebration in the United States. This is anniversary of the 1967 United States Supreme Court decision Loving v. Virginia which struck down all anti-miscegenation laws remaining in sixteen U.S. states.". This event in the second decade of the month June is annual. 
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That’s the day that the Supreme Court legalized interracial marriage at the federal level, knocking down bans that remained in 16 states. June 12 marks Loving Day, a celebration of the landmark 1967 Loving vs. Virginia Supreme Court case, and the couple that made it happen: Richard and Mildred Loving.
Similar holidays and events, festivals and interesting facts
Indomitable Passion Day on June 11
Red Rose Day on June 12
Superman Day on June 12 (Superman was first created in 1933 by Joe Shuster and Jerry Siegel, the writer and artist respectively);
Sewing Machine Day on June 13
World Wide Knit in Public Day on June 14
Magna Carta Day in Britain on June 15
Nature Photography Day on June 15
Smile Power Day :) on June 15