It is said that inflation (caused by money printing at least) is a hidden tax on everyone, which definitely hits the poor more than a progressive tax scheme would.
I forget a famous economist (old British guy I think) who said that there is no more effective way to secretly and insidiously overthrow / disrupt a society as unchecked inflation.
(something similar to that, I'm probably paraphrasing badly)
it's a tax on your bank account, but other assets can increase in value proportionally with inflation