Is same-sex marriage anything new?

By Robert Launay

Updated 2103 GMT (0503 HKT) May 13, 2015

Outside the Supreme Court of the United States, people hold signs calling for "equal justice under law."
Photos: The many signs of #SCOTUS
Outside the Supreme Court of the United States, people hold signs calling for "equal justice under law."
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A group against same-sex marriage prays in an "appeal to heaven" outside the Supreme Court.
Photos: The many signs of #SCOTUS
A group against same-sex marriage prays in an "appeal to heaven" outside the Supreme Court.
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Catherine Quinn of Detroit holds up her sign supporting same-sex marriage outside the Supreme Court.
Photos: The many signs of #SCOTUS
Catherine Quinn of Detroit holds up her sign supporting same-sex marriage outside the Supreme Court.
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Pastor Larry Hickam holds a sign of what he says is the definition of marriage outside the Supreme Court.
Photos: The many signs of #SCOTUS
Pastor Larry Hickam holds a sign of what he says is the definition of marriage outside the Supreme Court.
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Kevin Rosseel of Washington stands outside the Supreme Court with his sign in support of same-sex marriage.
Photos: The many signs of #SCOTUS
Kevin Rosseel of Washington stands outside the Supreme Court with his sign in support of same-sex marriage.
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Stephanie Jones and Diana Iwanski of Clermont, Florida, share their sign in support of same-sex marriage outside the Supreme Court.
Photos: The many signs of #SCOTUS
Stephanie Jones and Diana Iwanski of Clermont, Florida, share their sign in support of same-sex marriage outside the Supreme Court.
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Sarah Rauber of Maryland stands in front of the Supreme Court.
Photos: The many signs of #SCOTUS
Sarah Rauber of Maryland stands in front of the Supreme Court.
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McKenna Inskeep hands out stickers in support of marriage equality outside the Supreme Court.
Photos: The many signs of #SCOTUS
McKenna Inskeep hands out stickers in support of marriage equality outside the Supreme Court.
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Mike May of Cleveland argues against same-sex marriage in a debate outside the Supreme Court.
Photos: The many signs of #SCOTUS
Mike May of Cleveland argues against same-sex marriage in a debate outside the Supreme Court.
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Outside the Supreme Court, John Lewis and Stuart Gaffney of San Francisco hold signs celebrating their marriage.
Photos: The many signs of #SCOTUS
Outside the Supreme Court, John Lewis and Stuart Gaffney of San Francisco hold signs celebrating their marriage.
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