The Portland Police Bureau declared an unlawful assembly Saturday night when people gathered outside a police precinct in Oregon’s largest city and threw bottles toward officers, police said.

Until that point, federal, state and local law enforcement had been seemingly absent from the protests Thursday, Friday and Saturday. The demonstrations — that for weeks ended with tear gas, fireworks shot towards buildings, federal agents on the street and injuries to protesters and officers — have recently ended with chanting and conversations.

Activists and Oregon officials urged people at Saturday night’s protest in Portland to re-center the focus on Black Lives Matter, three days after the Trump administration agreed to reduce the presence of federal agents.

Groups gathered Saturday evening in various areas around downtown Portland to listen to speakers and prepare to march to the Justice Center and Mark O. Hatfield Courthouse.

One of the more popular events, “Re-centering why we are here – BLM,” was hosted by the NAACP. Speakers included activists as well as Oregon Sen. Jeff Merkley and Portland City Commissioner Jo Ann Hardesty.

Merkley and Hardesty spoke about policies they are putting forward, including to cut police funding and restrict chokeholds.

“The next thing we need you to do is vote like your life depends on it, because guess what, it does,” Hardesty said.

For the first time since the presence of federal agents in Portland diminished law enforcement and protesters noticeably clashed Saturday night.

As one group of protesters gathered outside the courthouse another marched to a precinct for the Multnomah County Sheriff’s Office and Portland Police Bureau.

Police stated that protesters threw glass bottles and directed lasers at officers. Just before 10 p.m., Portland police declared an unlawful assembly and told people to disperse or they may be subject to use of force or be arrested. Police could be seen charging, multiple times, at protesters in the area.

Police say a person in the crowd threw a glass jar or bottle filled with paint, striking an officer in the head. The officer was not injured.

Two people were arrested during the protest.

At the courthouse, the scene was different. Around 11:30 p.m. hundreds of people remained, standing and listening to speakers.

By midnight, protesters again began to march through the streets downtown.

Thursday and Friday’s protests also attracted more than 1,000 people — both nights were relatively peaceful. In a news release early Saturday, the Portland Police Bureau described Friday’s crowd as subdued and said there was no police interaction with protesters.