Donald Trump has been planting seeds for over a year, warning supporters not to trust the government, the polls or the media, because it's all rigged, he says.

I'm afraid the President election is going to be rigged. I have to be honest.

This is the whole ball game, and this is what I really want to say. I'm proud that journalists are standing up, individually, speaking up in ways that we rarely see. They're not anti-Trump. They're pro-democracy.

The political system, folks, is rigged. It's a rigged, disgusting, dirty system.

No one is talking. No one is emailing. No one is texting. It's spooky and scary.

Over time, the repetition, Donald Trump's lies about election rigging, have become a form of background noise, more of the same. And this is a propaganda technique, whether Trump knows it or not.

We, as a country, cannot allow ourselves to become numb to this. We, as a media, cannot shrug it off as old news, because the real danger here is that, when Donald Trump lies to his supporters about the others who are trying to steal the election, some of his supporters believe him.