It's the opposite of Gandhi's nonviolent resistance. Instead of acting as a moral foil, they act as a moral mirror. Both methods force to the surface judgments that people have already made but have avoided acknowledging. When people read about "a man slathered in Vaseline and covered in pubic hair and toenail clippings storm[ing] in and... desecrating a place of worship" and find themselves wondering which side they're on, they can't deny that they have little respect for Scientology.