You can tell it's an election year because so many noncrises are suddenly urgent priorities. Real median household income is still lower than it was in 2007, the smallest share of Americans is working since 1978, and the Russians are marching west, but Democrats are training fire on race, gender and the grievances of identity politics.

"We have this congenital disease, which is in midterm elections we don't vote at the same rates," President Obama said at a Houston fundraiser the other day. He means that the Obama...