Greeks don't have complete sovereignty in the EU. They've repeatedly voted for that arrangement (I happen to think it's a terrible one).

But the parent comment alleges a breakdown of the international system meriting, as I read it, global revolution. Given that we're in something of a golden age of humanity--what with record-low rates of per-capita violent-death rates, relative economic prosperity and technological advantage--the claim needs more than a First World country experiencing hardships around paying property taxes.