The dollar suddenly became something like an IOU issued by the hegemon. Before long, the global financial system was backed by IOUs issued by a hegem… - Yanis Varoufakis

Our view — that we’re not going to leave, and it’s up for the German government to leave, or to throw us out — is harder for them to deal with. The regime despised us because we neither want Grexit nor fear it. Our call unilaterally to implement perfectly moderate policies without fear or passion destabilized them. It was a danger to their system because of its widespread appeal....But things are also changing. In recent weeks, we have built strength among the trade unions, for instance among the electricity workers. They were betrayed by Syriza, who broke up and privatized the public energy company.... the cleaning workers in the public sector... bore the brunt of the troika’s assault against the poor...Social movements... need a political organization that allows them a voice beyond their specific localities... one that doesn’t dominate them. If they don’t have this, then they will be crushed by a new right-wing regime of a resurgent oligarchic right – one founded on.. the state of debt bondage until 2060 agreed with the creditors by Syriza...
Consider this, for instance: Syriza sold the railways for €43 million... they’d have got more money tearing up the rails and selling them as scrap metal. Or take gambling — Syriza enabled the deployment of thirty-five thousand poker machines by a private company, exploiting a bankrupt people with the fake promise of easy winnings. Even the Right’s privatizations were less deplorable than Syriza’s.

America was now a fully fledged deficit country, with a big trade deficit. But it was nothing like any other deficit country in the world. You see, Argentina, France, India, Greece needed to borrow dollars. America didn't need to borrow dollars to back up its currency. It didn't need to raise interests rates in order to prevent an exodus of dollars. The exodus of dollars was the foundation of American hegemony.

Why did they force us to close the banks? To instil fear in people.
And spreading fear is called terrorism.