Bloody standoff between protesters and agents, which lasted into the early hours of Friday, marked the 57th straight day of unrest in Oregon's largest city as residents demonstrate against racism and police brutality 

Federal agents fired tear gas and rubber pellets into the crowds of protesters outside the federal courthouse

Clash came soon after the the Justice Department's watchdog said on Thursday it was investigating the use of force by federal agents in Portland during protests

The violence overnight unfolded just 24 hours after Portland Mayor Ted Wheeler, a Democrat, was among those tear-gassed during another clash 

President Trump, who has labeled the demonstrators as 'agitators & anarchists', reveled in the fact the mayor was gassed and called him 'pathetic'

Trump has now threatened to send in 60,000 more federal agents into other American cities facing unrest 

His threat came as his law and order takeover extended to Seattle on Thursday when a special response team of federal agents was drafted to stand by for duty in the city

Chicago also geared up for a surge of federal agents after Trump threatened to send in the troops to help tackle an uptick in gun violence