OKLAHOMA CITY - In a landmark decision the Supreme Court ruled same sex couples can marry, overturning 13 state's bans on same sex couples. The Supreme Court's decision caps a long and often contentious battle over what many have called the "defining civil rights challenge of our time."

Supporters of Friday's ruling are calling it a victory for love.

“There's no such thing as gay marriage any more or same sex marriage. Marriage is marriage for everyone in the entire United States of America and that's a big deal,” said Troy Stevenson, Freedom Oklahoma.

The justices ruled 5-4 that states cannot deny same marriage rights enjoyed for thousands of years by opposite-sex couples. This is the largest expansion of marriage since the overturn of bans on interracial marriages in 1967.

“This is Brown versus Board of Education. This is Loving versus Virginia. This is one of those moments in civil rights history in Supreme Court history that is never forgotten,” said Stevenson.

Stevenson with Freedom Oklahoma says June 26 will now forever be remembered as Equality Day.

Nearly 46 years to the day a riot at New York's Stonewall Inn ushered in the modern gay rights movement. And on this day in 2003, the Supreme Court struck down the Texas law no longer making same sex relationships criminal.

“This ruling is a victory for America. This decision affirms what millions of Americans already believe in their hearts: When all Americans are treated as equal, we are all more free,” President Obama said Friday morning in the Rose Garden.

A record number of same sex marriages are expected to be performed Friday and through the weekend.