Russian interference via Facebook, Twitter and Google in the 2016 U.S. Presidential election was a wake-up call for many. As Brainstorm host Michal Lev-Ram says, it was the first time the general public realized social media platforms could do more harm than good in the world.

Fast forward to today. What have the platforms done to battle misinformation? How effective have their changes been? And how will all of this impact the 2020 Election?

Lev-Ram, along with co-host Brian O'Keefe, turn to three experts for answers. They speak with tech investor turned activist Roger McNamee, MIT Professor and author of "The Hype Machine," Sinan Aral, and Fortune reporter Danielle Abril.

If you enjoy Brainstorm, check out the new Fortune podcast "Reinvent" about companies fighting to thrive in a world turned upside down. To listen and subscribe, click here from your mobile device.

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