Tear gas fired again; Portland protest standoff continues

Federal officers advance on demonstrators during a Black Lives Matter protest at the Mark O. Hatfield United States Courthouse Saturday in Portland, Ore. (AP Photo/Marcio Jose Sanchez)

Demonstrators shield themselves with umbrellas as federal officers launch tear gas outside the Mark O. Hatfield United States Courthouse during a Black Lives Matter protest Friday in Portland, Ore. (AP Photos/Marcio Jose Sanchez)

PORTLAND, Ore. — Federal agents again repeatedly fired tear gas to break up rowdy protests in Portland, Oregon, that continued into the early morning Saturday as demonstrations that have happened every night for two months showed no signs of letting up.