Portland protesters accuse federal officers of indiscriminate tear gas attacks

The move comes after a group of Democratic Oregon lawmakers, including Sen. Jeff Merkley, Sen. Ron Wyden, Rep. Suzanne Bonamici and Rep. Earl Blumenauer, sent a joint letter asking the Justice Department to review the federal intervention.

Trump's "strongman tactics will not be tolerated," Merkley said in a statement.

The president has said more Democratic-led cities, including New York, Chicago, Philadelphia, Detroit and Baltimore, could see similar federal enforcement efforts.

Portland protesters first gathered at the end of May to decry police brutality following the death of George Floyd in Minneapolis, but demonstrators have switched focus in recent weeks and are now calling for federal forces to vacate the city.