Donald Trump is doing America a service

Disquiet rooted in a persistently weak economy, a chaotic foreign policy, growing national-security concerns and domestic social turmoil is aggravated by the sense that dissent — or even questioning conventional wisdom as defined by America’s condescending elites — is not only improper, but also immoral.

Resentment?

You betcha.

And that’s a pony Trump seems determined to ride as far as it will carry him. Which has been pretty far.

And guess what? He’s served the nation well — if only by dragging these issues to center stage, thereby forcing a discussion of them.

It’s a necessary conversation, but one that shouldn’t be held in the shadows, because shadows are where any nation’s worst instincts reside.