Hey, I'm John Avalon in for Brian Stelter.

It's time for reliable sources.

Our weekly look at the story behind the story,

of how the media really works,

how the news gets made, and how all of us can help make it better.

Now this hour we're going to have a special focus.

Welcome to the disinformation wars.

How weaponized lies are being spread through social media

with the goal of inflaming divisions and undermining not just the free press,

but democracy itself.

We'll have an exclusive report on the massive disinformation economy with a quarter of

a billion dollars being spent to put ads on websites devoted to fake news and hate news.

Also, CNN's own Clarissa Ward uncovered Putin's secret army and now she's the subject of a Russian

disinformation campaign.

We'll speak to her live.

And with 12,000 lies and misleading statements to date,

Donald Trump hits a dark new milestone,

raising new questions about how to deal with disinformation

emanating from the Oval Office.

But first, the right has long accused the media of bias, but now some on the left are echoing

those accusations.

Bernie Sanders lashing out at the Washington Post accusing the paper of taking orders

...