Regulation summary

Regulation is a rule or directive made and maintained by an authority.
The government regulates video games in and attempt to stop children and teenagers under the age rating to play the game. An example would be Grand Theft Auto 5, which is rated 18, so the government want those below the age not to play the game, because they could be influenced by certain aspects of the game, or they could potentially be mentally harmed by the content they see within the game.
The press is regulated by the Independent Press Standards Organisation.
The British Board of Film Classification regulates film and TV. Their purpose is to rate films and TV shows based on the adult themes, nudity, sexual content and violence shown in the film or TV show. If it had all of these things in it, it would be rated at 18, to stop people under the age of 18 watching it as it would not be suitable for them.
Regulation should exist due to a number of reasons. To protect the vulnerable, to uphold the law, to prevent the immoral being shown positively, to take into account the message of the work in its entirety, to protect against harmful messages, and to avoid penetrating real-life criminal acts.