Why is it that when something negative is said about Trump, his

Dennisville - Why is it that when something negative is said about Trump, his supporters ask for a "fact check?" When you then cite numerous reports of the facts, they say it's "fake news." If the New York Times, Wikipedia, The Washington Post and Time Magazine report that 34 people, three companies, top advisers to Trump, and Russian spies and hackers with ties to the Kremlin have been convicted for interfering in the 2016 election, is it still fake news? Is all print news fake? What exactly do Trump and supporters consider fact?