When a hurricane hits the coast, you'll find that a lot of people happen to board up their windows as well. A common set of pressures can provoke the same response from different people working independently. No coordination needed.
Google round earth conspiracy
Zeitgeist is not coordinated.
Those are some serious charges you're levelling. I'm assuming you have proof, yeah?
I really do think they have been visited by the FBI, who has warned them not to implicate themselves in ongoing plots to kill more people.