I though I'd post some some censorship definitions as people are struggling to agree on what it is..
The suppression or prohibition of any parts of books, films, news, etc. that are considered obscene, politically unacceptable, or a threat to security:
(oxfordictionaries.com)
Censorship is the suppression of speech, public communication or other information which may be considered objectionable, harmful, sensitive, politically incorrect or inconvenient as determined by governments, media outlets, authorities or other groups or institutions.
(wikipedia)
Censorship is the name for the process or idea of keeping things like obscene word or graphic images from an audience. There is also such a thing as self-censorship, which is when you refrain from saying certain things — or possibly re-wording them — depending on who is listening.
(vocabulary.com)