Most justices voice skepticism on marriage act ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page KAREN BLEIER/AFP/Getty Images Gay marriage supporters marched at the US Supreme Court on Wednesday. JOSHUA ROBERTS/REUTERS It marked the second day of Supreme Court hearings on gay marriage. JONATHAN ERNST/Reuters Alan Eckert of Albany, Calif., protested against the Defense of Marriage Act in front of the US Supreme Court on Wednesday. Carolyn Kaster/AP The court on Wednesday will hear a challenge to the 1996 Defense of Marriage Act. JONATHAN ERNST/Reuters "To me, today is the big one. This is about discrimination written into federal law," said J. Mary Sorrell of Massachusetts. JONATHAN ERNST/Reuters Marcos Garcia held flags on the steps of the US Supreme Court. Chip Somodevilla/Getty Images Michael Sabatino (left) and Robert Voorheis of Yonkers, N.Y., joined hundreds of others outside the Supreme Court. Chip Somodevilla/Getty Image It marked the second day of Supreme Court hearings over whether gay and lesbian couples have a Constitutional right to marry. JEWEL SAMAD/AFP/Getty Images Plaintiff Edith Windsor (left) was ordered to pay $363,000 in estate taxes following the death of her partner of more than 40 years. JEWEL SAMAD/AFP/Getty Images Massachusetts, which became the first state to legalize gay marriage in 2003, also was the first state to challenge the law in 2009.