The problem with writing that your company is knowingly committing a crime in an instant message to colleagues has little do with "negotiation" and everything to do with evidence, which funnily enough is taken into account in most legal systems influenced by Napoleonic codes...
It may surprised you to learn that criminals also commit crimes and lie about them in countries whose legal system is not based on common law.
It may surprised you to learn that criminals also commit crimes and lie about them in countries whose legal system is not based on common law.