"common identity" is kind of an oxymoron. Any person can at at best have their own identity. A "shared identity" is not a lot of people having a shared identity, but each of them not having one. Shared values, mutual trust, those make sense, "shared identity" is double think. If it can be shared it's not identity.

How would not going to war allow wealthy people to hold on to their wealth? That's a head scratcher, too.

And remind me, what are a lot of those immigrants fleeing from? Who was in favour of fucking up the already fucked up Middle East plenty more, for example? Who set the stage for ISIS? Wasn't it a nation riled up into a frenzy, with a "shared identity" pouring out every nook and cranny?