U.S. President signed gay marriage legislation into law before a crowd of thousands, a ceremony that reflected growing acceptance of same-sex unions.

“This law and the love it defends strike a blow against hate in all its forms. And that’s why this law matters to every single American.

The road to this moment has been long, but those who believe in equality and justice – you never gave up”, - said Joe Biden.

The White House projected the lights during the ceremony but the rainbow colors became more brilliant as the sun set hours later.