Intense confrontations erupted in Charlotte as protesters surrounded federal immigration agents during Operation Charlotte's Web, shouting demands for agents to leave.

The Cook County Sheriff's Office said the arrests were made by midday, and that it was working on verifying identities and potential charges.

Saturday’s march through the streets of Belém, Brazil, was a contrast to the muzzling of dissent at past years’ U.N. summits.

Protesters clashed with federal agents in Charlotte, North Carolina, during Operation Charlotte’s Web, shouting and blowing whistles as officers searched for a man in a wooded area. (Video by Oliya Sc

Thousands of demonstrators marched in Belem, Brazil, at the halfway point of United Nations climate talks to demand progress from negotiators on the problem of climate change — among other causes.

The UN says hundreds of people were killed in the protests. Verified clips show the violent actions of police as they attempted to crush protests.

They’ve given the money to other schools outside of Columbia, and once again, ignored a historically marginalized community,” Amy Brooks, an Oakland Mills parent, English teacher and

Authorities arrested 21 protesters Friday outside a Chicago-area federal immigration facility that activists say functions as a de facto detention center and is plagued by inhumane conditions. The Cook County Sheriff's Office said the arrests were made by midday,