Taking funds that do not belong to you to purchase what you desire is plain old, garden variety theft.
If they want riots in the streets and dead bankers found in their beds then let them try.
Martial law and the National Guard.....
Best bet is to either hide the cash or turn it into commodity.
Is your house paid off?
Do you have non-perishable food and ammo?
Do you have skills to use to (basically) homestead?
The other day, I just learned how to make soap. I'll be practicing.
What they don't have, they can't easily confiscate, like your money, which may be valueless by that point anyway.
Do you have non-perishable food and ammo?
Yes and Oh, yes.
Do you have skills to use to (basically) homestead?
Oh, hell yes.
Convincing the ever so lovely Mrs. B.S. Roberts that conversion of paper into tangibles is the best course at the moment is an ongoing Project.
But the IT, Building Services and Security Departments are making good headway with the Secretary of The Exchequer in that regard.