The NSA has had two very powerful things on internet for a very long time now, Echelon and Spider. Both are very powerful and can do a lot of things that most people wouldn't think are possible.
It's not just Google that has been manipulating your internet experience. I noticed this begin during the health care disaster. It was like an iron curtain fell onto the internet and everything started working a lot differently than it had in the past. As just one example, you've probably never heard before that the specific reason the health care law was unconstitutional was that it was a violation of the 4th Amendment. Government cannot seize your property. Commanding you to turn your property over to whatever private entity you are ordered to turn it over too, or your property will be seized and given to that company, is a clear violation of the 4th ammendment. Any mention of this was essentially erased from the internet in real time as it happened. Attmepts to make posts stating this, the posts would never appear. Any article mentioning it would not list in search engines, etc. It was, almost obviously, a massive campaign to squash any dissent of the subject and prevent anyone from explaining what the actual issue was (it was a form of slavery called "indentured servitude").
Ever since then, the internet has been effectively controlled by people who decide what opinions you will see and which ones you won't see. The software that does this is far more capable than most imagine it too be, much like the NSA's Echelon and Spider. This is no longer a free country.