There’s a sense among many that well established points of view should command general assent, and that it’s somewhat of a sign of mental deficiency to dissent from the widely promoted points of view. The problem for those in the ruling class, however, is that their position has been so abused over the past few decades that more and more people have abandoned the principle of credulity, the default assumption of honesty in communication. Part of the reason for the baseline skepticism is that the powers that be have promulgated falsehoods frequently enough that fewer and fewer people are willing to accept their statements at face value.
From the wayback machine, a reminder of how disingenuous and mendacious the reporting was after Representative Giffords was injured, and many others murdered, in early 2011. Politicians and reporters can’t expect people to believe their statements without scrutiny after this sort of conduct.