The National Park Service removed references to transgender people from its Stonewall National Monument web pages on Thursday, as the Trump administration continued its push for federal agencies to recognize only two genders: male and female, as assigned at birth.

The move to strike the word “transgender” from the website for the first Park Service historic site devoted to America’s gay rights movement elicited anger in the symbolic heart of New York City’s lesbian, gay, bisexual and transgender community.

“It is outrageous,” said Erik Bottcher, the city councilman who represents the Greenwich Village neighborhood that is home to the monument. “This is the latest attempt to erase the very existence of transgender people.”

He added: “The rebellion at Stonewall would not have happened without trans people. To attempt to erase their existence is utterly shameful.”

Dr. Carla Smith, the chief executive of the L.G.B.T. Community Center, said in a statement that the website changes were “factually inaccurate” and “an affront to our entire community,” and she urged the Park Service to “immediately restore accurate and inclusive language.”

The Stonewall Inn, a tavern on Christopher Street, has been considered a cradle of gay rights activism since a police raid there in 1969 touched off three days of protests that helped galvanize a long-marginalized population into a force for political and social change.