The ongoing migrant standoff at a Manhattan hotel turned ugly Wednesday after a group of about 10 outside activists used open umbrellas to prevent the news media from documenting the scene.

How a standoff in Nevada years ago set the militia movement on a crash course with the US Capitol. The ABC News documentary "Homegrown: Standoff to Rebellion" is on Hulu today.

Video Shows Brothers, 7 and 9, Engaged in Armed Standoff with Police After Refusing to Turn Over Loaded Gun Deputies with the Bernalillo County Sheriff's Office were involved in a tense standoff ...