David Gergen: “While you have to say that Trump is a favorite, lots of things can happen between now and the election starting at Iowa.”

We're entering some kind of the most dangerous days of Donald Trump's presidency. He is erratic.

He is unfit for office right now.

You can stand up and say we shouldn't be doing this because it's unconstitutional. Therefore, I never have to come to say whether I agree or disagree whether he incited the riot.

I think we're in an unsustainable path. It's compared to being in a car on the edge of a cliff, and middle of the night with it with a rainy and no headlights.