As long as money is printed and police are paid, it cannot come crashing down.
The end is defined by scarcity. Of oil.
When food is not available at any price, because there was no transportation of it to shelves, then things come crashing down.
When printed money is worth a fraction of its value, it isn’t going to pay for anything, to include police. Particularly quality police.
I remember when we were paying Nicaraguan Contras with trash bags of their money. It was nearly worthless, and the lawlessness in Nicaragua today is famous.
1 USD = 36 Cordobas. Even after steady 4% GDP since 1996. The problem is their money isn’t attached to anything of intrinsic value. Soon to be an American problem.