Here is one with entertaining elements AND retains credibility. Video is 5 minutes 30 seconds.
Humans and the institutions they build: Either it's about making money/security, or money and power.
You have to think how an astronomer that is looking for a black hole thinks. You see a certain behavior by heavenly bodies and light, and you can determine that there is a black hole causing it, without actually seeing the black hole. Same thing with detecting conspiracies. You see certain behaviors of people, and without knowing you can logically determine that there is a conspiracy causing the behavior. I could give you examples of behavior, but I don't want to get into a political argument.So wishing people in charge were intelligent enough to actually do a conspiracy.
There are so many reporters and others who would love to expose conspiracies these days...
But you got to have proof, otherwise the 'I just know it is a conspiracy' is in the realm of politics.