In uncertain times, Americans take a break for Independence Day

Millions of Americans took a welcome Fourth of July break on Thursday, flocking to parades, fireworks shows and barbecues for a brief respite from the daily drumbeat of unsettling news at home and abroad.

The holiday, which marks the July 4 signing of the Declaration of Independence from Britain in 1776, is a day when Americans traditionally celebrate with proud displays of old-fashioned patriotism.

This year, with the country’s drift toward hyper-partisanship and an election...