What Happen when a Group of People trying to withdraw All there Cash from BANK ?

Bank will call police to come and arrest you.

about two dozen people formed a queue inside the Citibank building in order to close their accounts as a part of the Occupy Wall Street protests. Instead of allowing them to take their money elsewhere, the genius managers and security people in charge locked them inside and had them arrested.

https://www.youtube.com/watch?v=AWGEQ5QTYhk

the Future is Bright with BTC