I honestly don't know too much about Greece's situation, but from what I do know i have pretty little sympathy for them.
As I see it, it was a country where people worked an exceptionally small amount - they worked very few hours, had a very low retirement age, etc.
From talking to people, this was largely because the culture had different priorities than mine does - they valued spending time with their families more than making money, for example.
And that's fine - maybe even praiseworthy. But if you're going to work that little, you have no right to complain when your quality of life is, consequently, significantly lower.
And when you continually spend more than you make, you either need to make more or spend less. Sorry. I know you might like to have pretty low takes, work a 30 hour week and retire at 60. But that's just not doable. And if you're going to start rioting when it becomes clear that you might actually have to work more if you want standard comforts, it's pretty immature. And, given how the euro is structured, one small country's immaturity can jeopardize the stability of the Euro and, consequently, the global market as a whole.
Get over it, Greece.