(CNN) -- Politicians and celebrities were quick to weigh in, via Twitter and in statements, on news of U.S. President Barack Obama's support for same-sex marriage. Here are some reactions:
Talk show host Ellen DeGeneres (@TheEllenShow)
"Thank you President @BarackObama for your beautiful and brave words. I'm overwhelmed."
"Glee" actress Jane Lynch (@janemarielynch)
"Pretty darn happy today. Thanks Mr President, for supporting the dignity of my family and so many others!"
New York Mayor Michael Bloomberg (@MikeBloomberg)
"President @BarackObama's announcement is a major turning point in the history of American civil rights"
Los Angeles Mayor Antonio Villaraigosa (@villaraigosa)
"We stand w/Pres. Obama - love doesn't have a color, love doesn't care if you're gay or straight. Love doesn't discriminate."
San Francisco Mayor Edwin M. Lee
"Today's announcement by President Barack Obama moves our country one step closer to marriage equality. With the President's personal support on the issue of same-sex marriage, we celebrate and recommit ourselves to the fight for all families."
Meghan McCain (@McCainBlogette)
"Even though he did it a little late under political pressure - very happy to hear the President come out in support of gay marriage."
Actor Neil Patrick Harris (@ActuallyNPH)
"President Obama announces his support for same-sex marriage. ... Bravo, Mr. President, and thank you."
The Rev. Al Sharpton
"I salute President Obama's statement today supporting same-sex marriage. This is an important and historic development for a sitting President to take such a bold, and I feel correct, position. This is not about mine or anyone's personal or religious views. It is about equal rights for all."
"I thank the President for his courage in standing for equality—this is true leadership—this is America."
"It's about time! Wow... I just heard that President Obama has officially announced that he supports gay marriage!! This is such a huge step forward in our country's fight for civil rights and I hope that today this will give hope to so many young people across the country. We've never had a president so supportive of the lesbian, gay, bisexual and transgender community and today I am proud to be an American!! I'm so happy that our country is making history and moving forward. No more living in the past!"
Singer Cyndi Lauper
"President Obama continues to be a true leader for equality and I have never been prouder to call him my president than I am today. The president's support of marriage equality gives hope and encouragement to the millions of lesbian, gay, bisexual and transgender young people who feel ostracized and alone. "
Singer Rob Thomas
"I am simultaneously proud to live in a country where our President openly speaks for equality for all and sad that it's even still a question that it's deserved."
Singer Melissa Etheridge
"Every now and then an American gets a chance to be a leader, and change the world. President Obama has taken that chance and has made a choice that signals the tipping point in our culture's definition of love and family. His announcement brings in the new age of acceptance of diversity for which every American will benefit."
Singer Adam Lambert
"It is great that President Obama had the guts to speak out -even in an election year- for the traditional American values of justice and equality for all."
CNN's Jennifer Wolfe and JD Cargill contributed to this report.