Stuart Gaffney (L) and John Lewis (C), plaintiffs in the 2008 Defense of Marriage Act (DOMA) case, celebrate while traveling along Market Street during the annual Gay Pride Parade in San Francisco, California on June 28, 2015, two days after the US Supreme Court's landmark ruling legalizing same-sex marriage nationwide. AFP PHOTO/JOSH EDELSON (Photo credit should read Josh Edelson/AFP/Getty Images)
