illiciteracy
A lack of knowledge/education regarding unacceptable behavior.
Ethan Couch's "affluenza" defense was about as pathetic and unbelievable as someone claiming illiciteracy about ordinary everyday matters --- naturally, one should indeed respect/forgive someone's not being aware of a "non-obvious/universal" law or custom, but everyone with even half an ounce of common sense knows that getting roaring-drunk and then rocketing down a dark rural highway at 70-plus mph is ALWAYS a big no-no, regardless of what jurisdiction you happen to be in!