Did Facebook fail Americans in 2016 Election?

Did Facebook fail Americans in 2016 Election? Facebook, Inc. is an American online social media and social networking service company based in Menlo Park, California. It was founded by Mark Zuckerberg, along with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes

The company is being accused of abdicating its responsibility to clamp down on fake news stories and counter the echo chamber that defined this election.

Exactly where did Facebook fail in during the election?

Was leaking of private data to third parties aimed at changing and scheming to change the mindsets of America?

Did the leakage aid one candidate towards the victory?

Did manipulation impact the final decision to vote a particular candidate over the other?

To what extent did this affect the election result?

Will this affect the future democracies in the west?