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Let's begin with you introducing yourself.

My name is Emma Lonso and I'm the Director of the Free Expression Project at the Center for

Democracy and Technology. Emma is an expert in the field of content moderation, a cultural

and political grey area when it comes to free speech, and the conflict around that grey area

only got worse when Peyton Gendron, an 18-year-old, killed 10 people last Saturday afternoon in Buffalo,

New York. The horrific mass shooting was broadcast live on Twitch, the popular live streaming site,

where millions of broadcasters produce content for tens of millions of visitors each day.

Twitch moved quickly, removing the video of the shooting within two minutes of the broadcast

starting, but even that quick work may not be fast enough. Emma says once that content is out there,

the damage is already done. It is often very common for either the attacker or people who are working

in concert with him or who just want to get that material out and shared more broadly

to really begin a campaign of trying to upload the video, still images from it, associated content

in a lot of different varieties and formats on services all across the web.

Even though Twitch removed the video swiftly, it spread rapidly across social media platforms.

Hours after the shooting, it was viewed more than 3 million times on a site called Streamable

and shared hundreds of times across Facebook and Twitter. Social media sites generally

don't want videos of mass shootings or hate crimes to show up on their platforms.

And in 2017, four major tech companies, Facebook, Microsoft, YouTube, and Twitter,

took action to try to stop that kind of content spreading across the social media landscape,

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