Recently I saw that baby formula in our nearby store is now in the plastic box, with a tracker to make sure it's not stolen. Made me really sad. I asked the store employees, and apparently it's a common problem.
We have already established, that 'just following orders' is not valid, and there does come a point where the law is so inhumane that you must disobey it.
I don't think the line is at 'Hitler is in charge', I think it comes much earlier. For example 'The law' in Britain has castrated Allan Turing for being gay after he won a Nobel prise and helped win the war. Would you follow those orders?