The officer was found Tuesday morning at the Chicago Police Department's Homan Square detention facility on Chicago's West Side, an alleged "black site" used by the CPD.
Tens of thousands have taken to the streets in Russia's far east for the past three weekends.
A lawsuit has been filed against the Trump administration on behalf of the Wall of Moms, anti-racist organization Don't Shoot Portland and several individual protesters.
The George Floyd Hologram Memorial Project will travel to five locations this week, replacing former Confederate statue sites with an image of Floyd.
Robert Bernard Hickey, 44, was arrested by agents from Homeland Security Investigations and U.S. Customs and Border Protection on Friday, U.S. Attorney Billy Williams' office announced on Monday.
Seattle Mayor Jenny Durkan said President Donald Trump has "clearly targeted cities run by Democratic mayors" as more federal forces are deployed across the country.
Eight-four percent of Democrats, 53 percent of independents and 13 percent of Republicans said the protests will help support racial justice and equality.
Grace Morgan, 32, told Newsweek she was held by officers with the U.S. Marshals Service inside the Mark O. Hatfield United States Courthouse for more than five hours.
Noelle Mandolfo, 30, was seen in videos posted on social media being pinned to the ground by federal officers outside the Mark O. Hatfield United States Courthouse in downtown Portland.
Portland protesters have accused the Trump administration of violating their rights.
Last week, President Donald Trump again condemned players kneeling during the anthem, suggesting the gesture "would hurt a lot of people."
A new viral video shows a white woman yelling "Black lives don't f****** matter to me" while attending a rally supporting law enforcement officials outside of the Vermont State House.
The Democrat running for Texas' 1st Congressional District said his campaign manager was assaulted during a protest in downtown Tyler.
Noelle Mandolfo was arrested outside the Mark O. Hatfield United States Courthouse in downtown Portland in the early hours of Monday.
The mayor also said protesters could be "providing cover" for agitators by demonstrating after dark.
Kristen Jessie-Uyanik, 41, said she was with the Wall of Moms outside the Multnomah County Justice Center when she "heard a BOOM and felt something hit my face."
Police were responding to reports of a shot fired in Lownsdale Square Park when someone pointed out a suspicious bag to officers.
"We will not be the people who sat by and watched our neighbors commit these atrocities," one protester said.
The video shows armed law enforcement officers pepper spraying photojournalist and military veteran Mike Hastie during a Portland protest.
Protesters in Richmond, Virginia, clashed with police during a demonstration in support of protesters in Portland, Oregon.
Rockford Mayor Tom McNamara said he would be willing to talk to demonstrators, but not in front of his house.
The Portland protests have reached their 60th day.
Eight teams have reportedly met to discuss kneeling during the national anthem, following the example set by MLB players this week.
Protesters face off with federal officers outside the Mark O. Hatfield Federal Courthouse in the center of the city which has seen nearly two months of unrest following the death of George Floyd.
"DHS now says they have a limited number of agents in the area on standby to protect federal buildings," Seattle Mayor Jenny Durkan wrote.
The 18 Portland demonstrators were arrested for alleged criminal conduct, including failing to comply with a lawful order and assaulting a federal officer.
"We don't work in concert with government," said Seattle Times executive editor Michele Matassa Flores.
A new advisory group will review possible further actions to be taken regarding Confederate artifacts in the Capitol.
Seattle Mayor Jenny Durkan said the city is "prepared to pursue every legal recourse" if federal agents intervene in this weekend's protests.