Be skeptical of any news that comes to you through social media, such as Facebook and Twitter, and even web searches.
Independently verify the source (by performing a separate search) and independently verify the information (through more mainstream news sources or fact-checking sites).
Select news sources known for high-quality, investigative reporting. Search these sources directly. Don't settle for web search results or social media news feeds.
"Curiosity is the seed from which sensible democratic decisions can grow. It seems to be one of the only cures for politically motivated reasoning but it’s also, into the bargain, the cure for a society where most people just don’t pay attention to the news because they find it boring or confusing."
-- Tim Harford. "The Problem with Facts: Tim Harford on How Today's Politicians Deal with Inconvenient Truths." FT Magazine. 9 March 2017.