What? Bank runs are nearly impossible these days. The banks are all protected from such situations, and the money is so fractional you would have to find a way to pull money out of bank investments. It's not like the 1940's where you money was tied up in your neighbors house.
If you are going to pull cash so that you can still operate when they try to force a cashless system, that's a different story. Though in that situation it would make more sense to put your dollars into other values, like silver, gold, or bitcoin (though that seems dangerous). Just holding onto cash is a bad idea because of how fast it depreciates.
In other words, you guys are morons if you think holding onto cash is going to do anything to the elite/banks/whatever.