When Facts No Longer Matter

(By Paul Farhi of the Washington Post, reprinted and taken here from THIS WEEK news magazine)
 
What is true and what is not?
Thanks to the explosive growth of “the ‘alternative’ information ecosystem”, fringe views have gone mainstream, and the truth is whatever you prefer to believe.
Do you believe that vaccines cause autism?
That the elementary school massacre at Sandy Hook was “a false flag” operation staged by the government to promote gun control?