Here's the thing though. Paranoia can be developed as a weapon. An agent can come in, make it clear they are a spook, then disappear. Then a week or month later, someone else can come in and say something. Little papercuts. And next thing you know, you're ranting and raving about spooks and looking crazy, and honestly are being driven a little bit crazy. I could see this being a very effective tactic to completely discredit someone, but also make them so paranoid they are ineffective.

While you can never know if someone is a spook or not, there ARE people in your life that you can KNOW are not. That crazy sweet nutty low-IQ lady down the street next to your parents since you were a kid. The child playing soccer in the street. These folks are your grounding.

The rest, don't guess too hard. It would only be used against you. They might be, they might not. And don't plot violence. ;) Easy enough.

I have no doubt there are government folks in bitcoin. Many are easy to see. Many will just tell you. Many are just working for VCs. There's a lot more besides. There's a hell of a lot going on in bitcoin. But paranoia is not going to help you.