A growing climate protest group that opposes all fossil fuel development was given a private meeting with John Podesta, President Biden's top clean energy adviser, last month.
The Colorado Supreme Court building in Denver was breached by an armed intruder who shot out windows and held a security guard hostage, state police say.
U.S. presidential elections have been rocked in recent years by economic disaster, stunning gaffes, secret video and a pandemic. But for all the tumult that defined those campaigns, the volatility surrounding this year's presidential contest has few modern parallels, posing profound challenges to the future of American democracy.