Not this. "The government" is just groups of people. Some groups, such as the NSA, certainly do have the ability to be close to omniscient (or as much as it matters here). Their motto is "Total Information Awareness" for crying out loud!
Didn't you ever read Brave New World? You don't publicly kill the Truth-knowing bloggers. You drown them out with by a million distractions. See also: Mao's Hundred Flowers campaign.
I'm not going to argue every stupid conspiracy theory that anyone can name...but I don't need to. There are plenty of actual conspiracy facts that should be sufficient to convince anybody that this kind of shit actually happens. COINTELPRO, Operation Mockingbird and MK Ultra to name a few.
The modern "skeptic" gets it all wrong - they don't question anything and come to conclusions way too quickly. That's because they're not actually skeptics, they're just afraid of getting out of their mental comfort zone.