Since Donald Trump's election, many ordinary voters have been desperate for an effective resistance to his aggressive drive to downsize the US government and recalibrate its foreign policy. But they are bristling at what they have seen so far -- Democratic lawmakers waving paddles in Congress and appearing in much-mocked dance videos, and staid press conferences outside the gray buildings of Washington institutions. "Democrats need a plan. Not placards on the House floor, not screaming at the...