Sister of David Patrick Underwood says social media company 'knowingly promoted inflammatory and violent content and connected extremists'

Nonprofit identifies 267 pages and groups that spread 'violence-glorifying' material on social network during the 2020 election

Native Hawaiians push back against appropriation by loosely affiliated far-right, pro-civil war movement

Small groups of demonstrators are largely outnumbered by troops; some express their backing for Trump, others support gun rights or decry government overreach

After deadly Capitol assault, bulletin warns of extremists gathering ahead of Biden's inauguration, cites a call to 'storm' buildings, reports 'threats' to Biden, Harris, Pelosi

Alleged scheme involved months of planning, rehearsals to snatch Gretchen Whitmer from vacation home; suspects aiming to incite uprising linked to 'boogaloo' group

3 men said to belong to the belong to the 'Boogaloo' movement, which has adopted Hawaiian shirts as a uniform and which promotes 'a coming civil war and/or collapse of society'