The Cause of Death

Have you ever heard the screams of a human sound so distorted that the seemed to be inhuman?
Have you ever seen someone you once knew dead on the streets of your happy neighborhood and you couldn't even clarify who it was until much later?
Death is all around us, and there is nothing we can do to stop it, unless, the death was unnatural, almost has if it was done on purpose.
Tweek learns of the horrible truth at his high school when he himself discovers a corpse on school grounds. The real question is, what truth is that?