What began as a way to describe misinformation was quickly diverted into a propaganda tool. The BBC's Dave Lee examines how "fake news" went mainstream - and where it might go next. About disinformation and fake news - a global problem challenging the way we share information and perceive the world around us.
Watch the video: how President Trump took 'fake news' into the mainstream.
Fake news quiz
There's so much fake news online, but there are some media literacy skills you can use to view what you read with a critical eye. In the quiz below you will see stories.
All of these stories were published online, but only some of them are real - some of them are made up!
You've learned a lot about 'fake news' but can you use your Fake News Detective skills to identify which stories are real and which are fake?