This Thursday in Chicago, Christian activists clashed with atheists when the group placed a banner over an atheist display in the city’s Daley Plaza, proclaiming that “A is for Angels.”

The banner covered a sign that was set up earlier this month by the Freedom from Religion Foundation featuring an 8.5-foot lighted “A” which stood for “atheists.” The display was part of a protest against Christmas-themed items in the public square.

“You shouldn’t be protesting the ‘A.’ Protesting the ‘A’ means you are surrendering our freedom of speech,” said a woman who described herself as a Christian activist. “Everybody should have their opportunity to speak here.”

She suggested that anyone who disagreed with her should “go back and read the Constitution.”

The atheist display celebrates the “season of the Winter Solstice,” and shows Founding Fathers Benjamin Franklin, Thomas Jefferson and John Adams, as well as the Statue of Liberty, standing or kneeling in adoration of the Constitution lying in a manger.

“We celebrate the birth of the Unconquered Sun – the TRUE reason for the season,” the banner reads. “As Americans, let us also honor the birth of our Bill of Rights, which reminds us there can be no freedom OF religion, without having freedom FROM religion in government.”

William Kelly, chairman of the Remember America Foundation, slammed Chicago Mayor Rahm Emmanuel for allowing the atheist group to set up their display.

“I think if you actually read the text of the atheist display it’s actually more hate speech,” Kelly said. “It’s really not adding anything to the Christmas spirit, it’s really not even telling anybody who they really are or what they believe or what they want for society. They’re just saying they don’t like Christianity.”

Watch the events unfold in the video below, via The Raw Story: