26 Million People Changed Their Facebook Profile Photo to Celebrate Gay Marriage

Did you notice a whole lot more rainbows in your Facebook feed over the weekend?

Well, you were looking at the handiwork of two Facebook interns – a piece of code that more than 26 million people took advantage of for Pride weekend. The rainbow filter was created by two interns at an internal hackathon the company last week, and it became so popular internally that the company asked them to refine the filter for public use, the company said in a statement Monday.

A number of celebrities jumped on board with the trend, including Elizabeth Banks, Leonardo DiCaprio, Andy Cohen, Anne Hathaway and E.L. James.

Arnold Schwarzenegger got in on the act as well, though one fan registered their disapproval, writing “What’s wrong with U [sic] Arnie? I have to unlike,” to which Schwarzenegger replied simply, “Hasta la vista.”

See Gay Pride Parades from Around the World

A couple kiss in Trafalgar Square after the annual Pride in London Parade on June 27, 2015 in London.

Rob Stothard—Getty Images

Actor Ian McKellen waves to the crowd as he attends as grand marshal during the annual Gay Pride parade in New York City on June 28, 2015.

Eduardo Munoz—Reuters

A couple carry an American flag and a rainbow flag during the annual Gay Pride parade in New York on June 28, 2015.

Eduardo Munoz—Reuters

A reveler attends the annual Pride in London Parade on June 27, 2015 in London.

Rob Stothard—Getty Images

People take part in the annual Gay Pride Parade on June 27, 2015 in Dublin.

Clodagh Kilcoyne—Getty Images

Fifty thousand people walk on the street for gay lesbian and diversity rights in Milan on June 27, 2015.

Roberto Finizio—Pacific Press/Corbis

People march in front of the Colosseum during the Gay Pride Parade (LGBT) on June 13, 2015 in Rome.

Filippo Monteforte—AFP/Getty Images

Israelis and foreigners celebrate during the 17th annual gay pride parade in Tel Aviv on June 12, 2015.

Menahem Kahana—AFP/Getty Images

A reveler takes part in the "Proud to be yourself" gay pride parade with his dogs in Santiago on June 27, 2015.

Vladimir Rodas—AFP/Getty Images

A participant takes part in the annual Pride in London Parade on June 27, 2015 in London.

Neil Hall—Reuters

People take part in the annual Pride in London Parade on June 27, 2015 in London.

Rob Stothard—Getty Images

A man waves the Rainbow flag on a truck during the annual Gay Pride parade in central Sofia, Bulgaria on June 27, 2015.

Nikolay Doychinov—AFP/Getty Images

Revelers with skull masks take part in a Gay Pride parade in Panama City on June 27, 2015.

Carlos Jasso—Reuters

A participant in the Pride March against discrimination in Manila on June 27, 2015.

Ritchie B. Tongo—EPA

Participants march during a Gay Pride Parade in Mexico City on June 27, 2015.

Edgard Garrido—Reuters

Participants of Sao Paulo's 19th annual Gay Pride Parade hold a large flag with the LGBT colors in Sao Paulo on June 7, 2015.

Tiago Mazza Chiaravalloti—NurPhoto/Corbis

Participants of the 20th 'Regenbogenparade' (Rainbow Parade) wearing body paint march on the Ringstrasse in Vienna on June 20, 2015.

Herbert P. Oczeret—EPA

Costumed people attend the Christopher Street Day, CSD, gay pride parade in front of the Semper Opera in Dresden, Germany on June 6, 2015.

Jens Meyer—AP

Keira Phair, of Westchester, Ohio, holds a rainbow flag during the Cincinnati Pride parade on June 27, 2015, in Cincinnati.

John Minchillo—AP

Revelers run under a huge rainbow flag during a Gay Pride parade in Ciudad Juarez, Mexico on June 21, 2015.

Jose Luis Gonzalez—Reuters

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