Threats and harassment against politicians, legislators and election officials in particular are increasing, because of the worsening political polarization environment in American society for years.

Dozens of former Republican and Democratic officials announced a new national political third party to appeal to millions of voters they say are dismayed with what they see as America's dysfunctional two-party system.

Half of Americans expect to see a second U.S. civil war within years and a fifth say they could one day be toting guns at a political face-off themselves, according to a new study about the nation’s deepening divisions.