‘Tis the season for attacks on what atheists call the folly of believing in the Christmas story.

Atheist groups have escalated a billboard offensive that they began last year, including a large sign on the New Jersey side of the Lincoln Tunnel that shows a Nativity scene and words in script reminiscent of Christmas cards that states, “You Know it’s a Myth. This Season Celebrate Reason.”

A Catholic group has fought back with a pro-Christmas billboard on the New York City side of the tunnel with a similar billboard that proclaims, “You Know it’s Real. This Season Celebrate Jesus.”

The groups behind the bah-humbug campaign say Christmas is the perfect time to promote a religion-free lifestyle, and they are doing so on billboards, magazines, trains, buses and televisions across the country. The aim of the ad blitz is to encourage nonbelievers to go public with their, well, disbelief.

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