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It’s when someone tries to prevent something from becoming public but because of their heavy-handed attempts at censorship, that thing actually becomes widely publicized. It’s called the “Streisand effect” because a photographer documenting coastal erosion took an aerial photo that included Barbara Streisand’s mansion. Her lawyer sent a cease and desist letter and sued the photographer and the organization running the project. The resulting publicity brought hundreds of thousands of visitors to the website that had the image in question, the exact opposite of what Streisand wanted. http://knowyourmeme.com/memes/streisand-effect