What conspiracy theories are huge in YOUR country or your city? (Patreon)

I'm currently doing some research on an alien conspiracy theory, and it got me thinking about how I know so many conspiracy theories with a US focus, but not as many from other places in the world. If you have a local conspiracy theory (it could be your city...your country, anywhere) that is huge where you live, but people across the world might not know about it, I would love to add it to my list of things to research!