This TED Talk features director and musician Hans Block,

and author and director Moritz Reisweig, recorded live at TEDxern 2018.

On March 23, 2013, users worldwide discovered in their newsfeed a video of a young girl being raped by an older man.

Before this video was removed from Facebook, it was already shared 16,000 times, and it was even liked 4,000 times.

This video went viral and infected the net.

And that was the moment we asked ourselves, how could something like this get on Facebook?

And at the same time, why doesn't we see such content more often?

After all, there's a lot of revolting material online.

But why do we so rarely see such crap on Facebook, Twitter or Google?

While image recognition software can identify the outlines of sexual organs, blood or naked skin in images and videos.

It has immense difficulties to distinguish pornographic content from holiday pictures,

adonis statues or breast cancer screening campaigns. It can't distinguish Romeo and

Juliet dying on stage from a real knife attack. It can't distinguish satire from propaganda

or irony from hatred and so on and so forth.

Therefore, humans are needed to decide which of the suspicious content should be deleted

and which should remain.

Humans whom we know almost nothing, because they work in secret.

They sign non-disclosure agreements, which prohibit them from talking and sharing what they see on the screens and what this work does to them.

They are forced to use code words in order to hide who they work for.

They are monitored by private security firms in order to ensure that they work for, they are monitored by private security firms

in order to ensure that they don't talk to journalists.

And they are threatened by fines in case they speak.

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