Fact-Checking Sites Exposed

With so much "fake news" floating around, massive corporations like Facebook have decided to rely on fact-checkers – so the average person doesn't have to think or do his/her own research. But what happens if these supposedly independent fact-checking sites are actually weighed down by their own biases? Why are so many of them liberal or leftist? Can they really be trusted to be impartial arbiters of truth? Do they have any authority at all? Discover the character of the people who run these sites. 31-min.