Investigation Discovery

Investigation Discovery (ID) is a United States cable channel that launched in 1996. It's shows' focus on true crime subjects. It was featured in the Season Seventeen episode, "Informative Murder Porn".

Background
The parents of South Park watch this network, along with others, while having sex. Dubbed "Informative Murder Porn", kids block this channel from their parents because they believe it will end with their parents killing each other.