Ersatz historian and “Christian nation” booster David Barton is at it again. This time he’s claiming that the city of Las Vegas cut violent crime by 75 percent after the police department adopted “biblical principles” and began working with conservative churches.

Editor’s Note: Chris Rodda is senior research director for the Military Religious Freedom Foundation and a longtime debunker of Religious Right figure David Barton.

Saturday is Religious Freedom Day. While it’s not one of our most well-known or popular holidays, Religious Freedom Day shouldn’t be overlooked.