Stanford University graduating students and women's rights advocates plan to use the school's commencement ceremony to again express their anger over the six-month jail sentence given to a former student for sexually assaulting an unconscious woman.

Students will demonstrate Sunday during "Wacky Walk," a rambunctious, slow-moving stroll by graduating students dressed in zany costumes that precedes the official graduation events.

Organizers are asking them to carry signs and decorate their caps with messages showing solidarity to the woman sexually assaulted by former Stanford swimmer Brock Turner.

The women's advocacy group UltraViolet says it has commissioned a plane to carry a banner demanding Aaron Persky, the judge on the case, be removed from the bench. The plane carrying a banner reading "Protect Survivors. Not Rapists. #PerskyMustGo" will fly over Stanford University Stadium ahead of commencement ceremonies.