Censor bars, also known as black bars, are a basic form of text, photography, and video censorship in which "sensitive" information or images are occluded by black, gray, or white rectangular boxes.
[1][2] Since the creation of digital editing software which can apply less obtrusive effects such as pixelization and blurring, censor bars are typically used for satire,[3][4] although they remain in contemporary use to address privacy concerns.
Censor bars are also used in art forms such as blackout poetry.
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