An atheist group has filed a lawsuit to remove the iconic World Trade Center Cross from New York's National September 11th Memorial and Museum.
Members of American Atheists say the cross is an unconstitutional "mingling of church and state," and if it's included in the museum other beliefs should be displayed as well.
"As a public accommodation, the memorial must allow us (and all other religious philosophies) to include our own display of equal size inside the museum, or not include the cross," American Atheists president Dave Silverman said in a statement.
"Equality is an all-or-nothing deal," he added.
Tuesday, the American Center for Law and Justice called the federal lawsuit "deeply flawed and without merit."
"This is another pathetic attempt to rewrite the Constitution and rewrite history by removing a symbol that has deep meaning and serves as a powerful remembrance to that fateful attack nearly ten years ago," said ACLJ chief counsel Jay Sekulow.
The 20-foot, perfectly formed cross was found in the Ground Zero rubble by a construction worker shortly after the 9/11 attacks.
It was officially blessed and placed inside the memorial museum Saturday.
Many New Yorkers say the cross was a beacon of hope for the city and the nation following the tragedy.
"[The cross] is an important part of our commitment to bring back the authentic physical reminders that tell the history of 9/11 in a way nothing else could," 9/11 Memorial president Joe Daniels said.
Last month, American Atheists also demanded that a street sign honoring seven firefighters killed during the 9/11 terrorist attacks be removed.
The sign read, "Seven in Heaven Way."