Information is power and control. It's perfectly reasonable that the press, government etc. would propagate false information as a way of keeping you clueless. Always consider the source and don't believe anything that contradicts your common sense or instincts.
That having been said, often simpler explanations are the correct ones.
The points of contention I'd have with this:
- "The press" are a really, really fragmented group. They're business rivals who often hold very different views and generally hate each other. Why would they cooperate to spread disinformation as part of a campaign?
- Similarly, "The government" changes hands quite regularly. Wouldn't, say, the Democrats want to reveal any secret conspiracies the Republicans had been involved in and vice versa rather than continuing with those conspiracies?
- "Common sense" is an interesting thing. Used correctly it can be a powerful tool, but when applied to the wrong situations (generally new ones very different to your everyday life) it
gets things wrong. After all, common sense is based on your experience.
Governments are bad at basically anything that doesn't involve mass murder and oppression.
Just out of interest, what is so fundamentally different about organising intricate plots for mass murders and organising basic day to day state run affairs?