In Portland, hundreds of demonstrators began assembling outside the Oregon Convention Center around 10 a.m. The crowd grew steadily, with many participants waving flags, banners and signs decrying the president and Immigration and Customs Enforcement.

Protesters gathered at Lincoln Park, voicing their opposition to President Donald Trump's administration's policies and decisions since his return to office this year. "We are concerned about the loss of democracy, in the Constitution, in the country," local Curtis Rich said.

Federal officers in tactical gear are clashing with demonstrators and deploying smoke, tear gas and flash grenades, the Oregonian reports.