This image depicts an American Atheists billboard that has been placed in several locations in Oklahoma City and Tulsa. [Image provided by American Atheists]

Holiday pictures and slogans abound at this time of year, but some local billboards featuring an image of Santa and his reindeer are definitely not promoting Christmas.

An organization called American Atheists is using this symbol of the Christian holiday on billboards in Oklahoma City and Tulsa to spread the word about their national convention set for Easter weekend, March 30-April 1, 2018, in Oklahoma City.

"Just like Santa Claus, the atheists are comin' to town!" reads the billboard featuring an image of Santa flying his sleigh over the Oklahoma City skyline.

Atheists are preparing to gather smack dab in the middle of the so-called Bible Belt of America — on purpose, a spokesman for the group said Friday.