Explicit isn't so much a problem, but nuance.

Example: the right to free speech is explicit a good and pretty well irrevocable thing, however some constraints such as using a public space to promote hate, speech meant to cause mass panic or harm or similar abuses are not protected as an exception to the broad basic right.

A part of the issue with the second is the population is so fiercely militaristic (we make such a monument of our military as being the greatest of heros) and individualistic that people will twist the wording any way they like to claim they should have the right to a tank rather than to thin what is reasonable for the general population.

Then there are the folks thinking they can revolt against a tyrannical government armed with globe covering drones because they have 100 rifles in their basement, but those are more especially deluded exceptions.