A group of demonstrators huddle as they are tear-gassed by federal officers during a Black Lives Matter protest at the Mark O. Hatfield U.S. Courthouse Tuesday, July 28, 2020, in Portland, Ore. (AP Photo/Marcio Jose Sanchez)
A demonstrator holds his arms up in the air as federal officers launch tear gas during a Black Lives Matter protest at the Mark O. Hatfield U.S. Courthouse Tuesday, July 28, 2020, in Portland, Ore. (AP Photo/Marcio Jose Sanchez)
Federal officers deploy tear gas and crowd-control munitions at demonstrators during a Black Lives Matter protest at the Mark O. Hatfield U.S. Courthouse Tuesday, July 28, 2020, in Portland, Ore. (AP Photo/Marcio Jose Sanchez)
Federal officers deploy tear gas and crowd-control munitions at demonstrators during a Black Lives Matter protest at the Mark O. Hatfield U.S. Courthouse Tuesday, July 28, 2020, in Portland, Ore. (AP Photo/Marcio Jose Sanchez)
Demonstrators shield themselves from advancing federal officers during a Black Lives Matter protest Tuesday, July 28, 2020, in Portland, Ore. (AP Photo/Marcio Jose Sanchez)
A demonstrator throws a tear gas canister back at federal officers during a Black Lives Matter protest at the Mark O. Hatfield U.S. Courthouse Tuesday, July 28, 2020, in Portland, Ore. (AP Photo/Marcio Jose Sanchez)