Adam Lambert Celebrates Marriage Equality, But 'No One Is Free While Others Remain Oppressed'

Katherine Tyler for iHeartRadio
Adam Lambert performs for iHeartRadio Live to celebrate the debut of his third studio album, The Original High, on June 16, 2015. 

Back in 2009, when Adam Lambert became a household name on American Idol, he made headlines when he came out in a Rolling Stone cover story and was the show's first openly gay contestant. Now, a short six years later, Lambert is applauding Friday's (June 26) Supreme Court ruling that makes gay marriage legal in all 50 states.

Adam Lambert Talks Coming Out in 'Out' Cover Story

Lambert sent this cautiously optimistic statement to Billboard following the ruling: “This day is a great celebration in the worldwide movement towards full civil rights for everyone, but we must remember that no one is fully free while others remain oppressed."

Beth Ditto on SCOTUS Marriage Equality Ruling: 'What a Moment in History'

The "Ghost Town" singer also took to Twitter for this one-word celebration earlier in the day:

Lambert's latest album, The Original High, debuted at No. 3 on the Billboard 200 this month.