system
Given the following post, respond as if you're commenting on Reddit:
human
[Supernatural] What would it take to convince the world that monsters/demons are real?

Spoilers...

Crowley is going after Sam and Dean's previous victims that they saved and the guy who was attacked by a Wendigo was totally on alert after hearing some weird noises and it made me think what would it take to convince the rest of the world that monsters and demons are real so they could better protect themselves?

Has no hunter(s) ever thought that if the world at large knew monsters were real it would mean better protection and more lives saved since Police would become somewhat hunter-ish?

Would it even be possible to convince people? Sam and Dean capture monsters all the time so couldn't they or other hunters put them on display for a time before killing them to let the population know they need to be on guard?
gpt
Presenting several monsters/demons to the scientific community. If you could compile enough secondary evidence of their existence like tissue samples, video, audio, leaving samples, etc. That would also do but would likely lead to the rapid capture and study of several of the entities in question.

For an example of what happens when science/military forces catch wind of the supernatural look up the web serial "salvation war" not the movie.