Following radical Presbyterian reform, the islanders became deeply religious, with card games, music and dancing forbidden, and three compulsory services every Sunday.

UNESCO: UK National Commission for UNESCO - Desert island diaries: St Kilda couple��s private papers to be published by the National Trust for Scotland

Strict Muslims believe it is forbidden to eat animals such as monkeys or to play games that could influence people to take up gambling.

BBC: Nigerian militants suspected of Maiduguri beheadings

Violent sports, movies and games enjoy popularity and profitability because of the excitement and "forbidden fruit" factor, say psychology experts.

CNN: Fans attracted to 'forbidden fruit' of violence