Don Nord, the medical marijuana user who lost his medicine to the DEA, is asking the judge in the case to cite the DEA agents for contempt for their refusal to return the pot. Good luck to him.
Many commenters, such as those following this post, see this as an issue of states' rights vs the fedgov's right to set drug policy. That's an interesting issue, but only a sidelight to what the real issue is in this case; human decency.
Imaging yourself to be one of those agents assigned to deny Mr. Nord his medicine. No matter what oath you've taken when you took the job, there are certain things that you cannot do, your ethical sense should prevent it. You cannot purposefully kill innocent people, for instance. The Nuremburg trial correctly set a precedent for such a thing. Claiming you were following orders does not absolve you of guilt.
Taking a cancer patient's medicine isn't quite at the level of outright slaughter of innocents. (although in Peter McWilliam's case*, the result was just as fatal) But it does go beyond what any decent person should allow.
*If you don't remember Peter McWilliams, or if you never read William Buckley's column about his death, you'll be very happy to read it here.