It is Facebook’s responsibility to limit ads with false information, not just news with false information.

Trump’s tumultuous relationship with the media has quickly become a defining characteristic of his presidency. But this war against the media not only signifies a lack of respect for both the Constitution and American history, it represents a threat to one of democracy’s most basic fundamentals rights — freedom of the press.

Widespread distrust of the media poses a threat to the free flow and sharing of knowledge, and journalists need to work with the community they inform to rebuild their relationship.

Fake news is like a bad game of telephone — one source reports their truth, then everyone else runs with it, imparting their own spin upon it. Serious problems arise when people get their news from just...