In many developed countries, organizations exist to censor the content of television programming. The aim of the censorship is to prevent children from be exposed to material which is overtly sexually explicit, excessively violent, or portrays drug use.
In the United States, the Federal Communications Commission (FCC) has the authority to arbitrarily censor all terrestrial radio transmissions. This include AM and FM audio bands and Digital Television transmissions.
Proprietary subscription networks, such as cable or satellite are not covered by the FCC's censorship mandates as these subscriptions services are optional. However, these networks, as well as syndicated broadcast networks (Discovery Channel, Cartoon Network, Comedy Central) typically operate their own "standards and practices" departments. They do this at the request of their advertisers, though some networks are more lenient (Comedy Central) than others (Discovery Channel).
The stated goal is to negatively impact a given network's ability to censor it's content.
At this time, the directives have not been established.