Hundreds of San Franciscans plan to prepare Crissy Field, the picturesque beach in the shadow of the Golden Gate Bridge where rightwing protest group Patriot Prayer will gather, with a generous carpeting of excrement.

“I just had this image of alt-right people stomping around in the poop,” Tuffy Tuffington said of the epiphany he had while walking Bob and Chuck, his two Patterdale terriers, and trying to think of the best way to respond to rightwing extremists in the wake of Charlottesville. “It seemed like a little bit of civil disobedience where we didn’t have to engage with them face to face.”