Ignorance of the law is the only position you can hold.
No one alive can read all the palp the congress of The US has passed.
No one alive can read all the palp the Infernal Revolting Syndicate has created.

So, ignorance is all that can be.

If the we supposed to be in knowing of the law,
the law would be constricted to one book that most knowledgeable people would be able to read and understand. In fact, it would be a course in high school "Reading and Understanding the Law".

But reality is far different. Almost every govern-cement bureaucracy has "rules" that are contradictory.
They all have rules that make it easy to take, but almost impossible to retrieve.
(such as asset forfeiture)
Never a balanced system.

So, in the end, what do we do? Mostly we can just recognize that we have no rights, but where is the line when enough is too much and the old authority is condemned?