The conservative religious organization the Catholic League has unveiled a new Christmas-themed billboard in response to an atheist organization’s display at the Wisconsin state Capitol.

The billboard, which was posted on Monday in the Madison, Wisconsin, metropolitan area, declared that “Atheists strike out at Christmas” and that “Celebrating Winter Solstice is a Child’s Game.”

“This is our season — not yours,” the billboard adds. “Celebrate the Birth of Christ … Merry Christmas!”