Censorship involves the suppression or prohibition of parts of media deemed obscene or unacceptable. There are arguments both for and against censorship. In the UK, the BBFC both censors and rates films to restrict certain content to certain age groups. Censorship aims to protect privacy, for example by omitting names from news stories, and to prevent offense, though it can limit artistic freedom. While censorship of explicitly sexual content in schools is reasonable, banning books solely due to their discussion of LGBT topics is overly limiting. Censorship is also useful for protecting the privacy of individuals like criminals who have served their sentences. Overall, censorship is a nuanced issue, and not always necessary in every situation.