US administration arrests 18 during week of chaotic Portland protests

US prosecutors have unveiled charges against 18 Portland, Oregon protesters -- ranging from assaulting police to arson and trespassing, a day after the Trump administration expanded the deployment of tactical police to Seattle.

The arrests came this week during clashes with federal police agents sent to Portland, where 56 straight days of antiracism demonstrations have captured national attention.

The Justice Department said all 18 of those charged had made a first appearance in federal court and were released pending trial or other proceedings.

Five people were charged with suspicion of assaulting a federal officer, trespassing and creating a disturbance during protests on the night of July 20-21, said Billy Williams, the US Attorney for the District of Oregon.

Seven people have been charged in connection with criminal conduct during a July 21-22 night protest, including one person charged with arson. Another six were charged over events from the night of July 22-23.

The federal forces have drawn criticism from Democrats and civil liberties groups who allege excessive force and federal overreach by President Donald Trump.

The deployment of federal officers has also drawn the scrutiny of the Justice Department inspector general, who announced an investigation of their use of force, and prompted a federal judge to issue a temporary order limiting their use of force and blocking them from arresting journalists and legal observers of street protests.

The Trump administration sent a tactical team to Seattle on Thursday in anticipation of protests this weekend despite the objections of the Seattle mayor and Washington state governor, who warned of a Portland-like escalation of tensions.

US Attorney for the Western District of Washington Brian Moran said in a statement that federal agents are stationed in Seattle to protect federal properties and the work done in those buildings.

The Trump administration has also sent federal police to Chicago, Kansas City and Albuquerque over the objections of those mayors.

Trump, who is running for re-election on November 3 in part on a campaign of law and order, has threatened to deploy federal forces in more cities run by Democratic mayors, who he accuses of being soft on crime.

The Portland team of tactically equipped, camouflaged officers fired tear gas canisters at Black Lives Matter demonstrators in central Portland early on Friday, taking on a policing role typically reserved for local law enforcement.

Portland has been rocked by nearly two months of demonstrations for racial equality and against police brutality, part of a movement that has swept the United States since the May 25 death of George Floyd, an African American, in the custody of Minneapolis police.