I know a woman who served time for homicide and claimed it was aliens.

Yes, and he was mentally ill on top of it. But on the other hand, it’s a fact the CIA used mind-control techniques via MK Ultra, that ties to a lot of the insane murders that were national news in the 60s. Your guy in the emergency department wasn’t part of a national news story.

It is a fact they they experimented with mind control, not that they accomplished it. Not according to any evidence I've seen. My point is that focusing the conversation like this never does anything to address actual problems. The most likely scenario is that he simply should have been in an institution sooner but wasn't because we don't do that anymore. Plenty of mentally ill people hold similar delusions. That doesn't make them true. I see many cases like this and I'm not helping them or anyone else by indulging CIA delusions, even if I agree that the CIA is disgusting and should be abolished (I do).

If he's mentally ill, then we can safely discard whatever comes out of his vile mouth.