What Happens When Greece Can No Longer Pay Riot Police?

Headline article on Business Insider today is “Greeks are Withdrawing Money from ATM’s Faster Than They Can Be Replenished”.

The accompanying picture is a bunch of Greek State soldiers with riot gear. The minor danger here is that the riot police will get out of hand and start beating or shooting protesters when things get really desperate.

But the major danger is this: What happens when the Greek State can no longer pay its own riot police?

What happens when these people aren't paid?
What happens when these people aren’t paid?