fiction - How can I convey something without going into details?

I am considering writing a novel in which society has fallen into a perverse pit of debauchery. This is necessary to the novel, but it also presents some problems. I want the reader to know just how bad things are, but at the same time, I want to avoid writing about them.

I don't want to simply say, "things are bad," and leave it at that. I need to show just how bad things are, so that the reader will understand the true state of society.

I also do not want to describe how bad things are, because 1) I simply don't want to write about such things, and 2) I don't want my novel to be adult-only. I want everyone to read this.

How can I describe how terrible things are, and yet not actually describe it?