A Apple iPhone displaying the Facebook app's splash screen in front of the login page in Washington, DC.
Media playback is unsupported on your device
Video

Facebook denies editing Trending Topics

Facebook has denied allegations that its Trending Topics intentionally suppressed stories supporting conservative political viewpoints.

A report published by technology news outlet Gizmodo said staff frequently chose to bury articles they did not agree with.

Dave Lee reports from outside of Facebook headquarters in California.

Go to next video: Why is Facebook so successful?