I almost forgot Covid. Since I discovered Quercetin and Zinc, I have not worried much about it, so I will revise my vote to Covid #1 in Century 21.
I am not sure what you mean by 9/11 fraud. I was out of the area when I saw the towers fall on TV. When returning home I drove near the Pentagon which was still smoking with a huge hole, so that was very real. I also have before and after photos of the Twin Towers and then empty sky.
Patriot Act, Saudi coverup & "Curveball"...aside from likelihood that 'they' knew the hijackers were here (I was in total disbelief that they produced IDs & pictures of all the hijackers in the timespan of a mere 4 days.
Even under the 9/11 scenario, government does NOT work that fast. In an era of 'conspiracy theories' proving to be true, nothing I've ever seen has convinced me that our government didn't 'let' 9/11 occur.
In fact, quite the contrary (i.e., "fraud").