Dozens of protesters gathered at an ICE facility in Portland, Oregon, on Saturday night
Video posted on social media showed the crowd chanting: 'No borders! No nations! Abolish deportations!'
Officers with the Federal Protective Service declared an unlawful assembly at 10pm
Protesters who resisted orders to disperse were targeted with tear gas and flash bangs in the streets
The same ICE building was targeted by 200 Antifa protesters last Wednesday after Joe Biden's inauguration
Meanwhile Seattle's interim police chief Adrian Diaz announced a new policy for arresting and prosecuting people who vandalize during protests
Biden's team have said they are monitoring the unrest but have not announced a plan to address it