Cry me a river, Chief. When this happens to a "civillian" your guys arest, you spout, "Ignorance of the law is no excuse." Same same here.
Well, MORESO for them than for the public, for two reasons. First, they're immersed of the legal system and have less excuse for not knowing plus other people's rights are contingent on their knowledge. Second, by being part of the system that has "Ignorance is no excuse" as a policy, they implicitly validate that policy for use against themselves. We, employed at real companies making real things, aren't in the same position logically.