[Mark] Lilla is a professor at Columbia University in New York, and he has waded into the debate about what Democrats and liberals should do now. Some Democrats answer nothing.

[Democrats] have lost the capacity to speak to the vast middle of America, an America that is, in large part, white, very religious and not highly educated.

Congress can grant a waiver [for General James Mattis ] and has done that once in history.

So many awful things have happened in Karachi, it's true. It has its own crazy rhythm. Even as crazy as other news is in Pakistan, the city manages to beat that in the frequency of catastrophes.

Republicans are now trying to stop Donald Trump. And there was much more ferocious and widespread criticism from Republicans of Trump this time around.

[Mark] Lilla sees a deeper problem, and he wrote an article in The New York Times denouncing identity liberalism.He says liberals have appealed to African-Americans or women or the LGBT community but failed to craft a strong, broad national message. He's not the only person saying this. Long before the votes were cast, Bernie Sanders argued the Democrats lost the white working class by not speaking broadly to the country.

You do have this circumstance in Karachi that because people know things are changing, the stakes are higher. Everyone is thinking, "My home is threatened, my job is threatened, my identity is threatened, my world is threatened." And that creates a very particular sort of climate, that is linked.