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.

Organizers of the “No Kings” demonstrations said millions had marched in hundreds of events. In Oregon, tens of thousands of people gathered in downtown Portland for two large protests -- one that began in Tom McCall Waterfront Park and the other at the Oregon Convention Center.

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.

A Portland woman was arrested after allegedly throwing a water bottle at an officer, and a Falmouth man was arrested for reportedly blowing an air horn directly at an officer from close range

A violent mob of protesters breached a US Immigration and Customs Enforcement (ICE) facility in Portland, Oregon, on Saturday night, injuring four federal officers, according to authorities.

Portland Mayor Keith Wilson released a statement Sunday addressing ICE protests following the No Kings demonstration in the city.

Several hundred protesters gathered outside the ICE facility Saturday afternoon and evening. Portland police declared it a riot.

Organizers call the mass protests nationwide a "day of defiance" in opposition to Trump administration policies.

Tens of thousands of Portlanders marched across the Willamette River this afternoon in a show of numbers aimed at opposing President Donald Trump’s deportation campaign and mocking his birthday celebration.

No Kings' rallies were held in dozens of Maine communities on Saturday. Protesters called out President Donald Trump's immigration policies on the same day as a military parade in Washington, D.C.

Despite peaceful demonstrations reported in multiple cities, violence flared at some anti-Trump protests over the weekend.

PORTLAND, Maine — Two people were arrested and charged with assault Saturday after organized protests in Portland, according to the Portland Police Department. The "No Kings" demonstrations took place at Monument Square and Lincoln Park, and police said Congress and Pearl Streets were closed during the Lincoln Park event.