The problem is that most people aren't critical thinkers, but simply rationalize information. Most look to the leaders of their tribe to tell them what the truth is. This is why places like David Wolfe, Natural News, Addicting Info, The Daily Caller, Infowars, and Breitbart manage to have many, many followers. If they ever tell the truth, it is more likely accidental than intentional...but idiots on the left will believe any tripe coming from the first three, and idiots on the right will believe any tripe coming from the second three.
We don't need more of "who watches the watchers". We need a lot more people asking, "What is the truth?" as opposed to "I wonder if my biased sources say this is the truth?". We need a lot more people understanding that truth is not conveyed in a few sentences, but takes many, many paragraphs and continual learning. We need a lot more people seeking to understand why "2 + 2 = 4" instead of seeking to prove why "2 + 2 = 8" or "2 + 2 = 1". We need a lot more people to understand that what you learned in the past may very well be wrong.