Is there a wealthy elite trying to make a one-world government? I don't consider that to be out of the realm of possibility.
Is Alex Jones a nut? Absolutely.
Chem-trails? Get out of here, you psycho. I'm positive that whole thing was started by bored conspiracy theorists with the brains of a kindergartener.
Death by vaccinations?

As for population control, I must admit that if I were part of the elite shadow government secretly running things, I might also resort to some drastic measures to curb the population boom for the sake of the greater good. But apparently these shady dudes don't consider space colonization an option... Jerks.