When it comes to preparing a TV program for broadcast, the most highly scrutinized are the shows intended for kids.
Things like realistic violence, realistic guns, cigarettes, alcohol consumption and sexual acts will be cut out straight away.
Censorship in anime is an interesting topic considering how it is censored within Japan as well as outside Japan when it is dubbed. Why exactly are some things censored while others are not? Is all of it always really even necessary? Here are some examples of censorship in One Piece: