We could be going into a terrible global banking crises, depending in which way the Italian vote goes. The problem is DEBT and DERIVATIVES....way too much of both AND all these banks are interconnected and up to their eyeballs in non-performing debts.
The whole banking system is set up like dominoes. Have you ever played dominoes? Do you have any money in these big banks, that play around with derivatives and loan out money to those who cannot pay them back. The government is not going to bail them out the next time. They are going to take YOUR money to save them. It is called a BAIL-IN.