BIDDEFORD — Droves of people returned to Mechanics Park on Friday to protest Johan Sebastián Durán Guerrero‘s fatal shooting by an Immigration and Customs Enforcement agent on Monday.

Hundreds of people were in the park by 4:30 p.m. and the number kept growing as the demonstration went on.

Many took a moment on their way in to linger by a fence along the outskirts of the park where a memorial has been built over several days. Some admired the array of flowers, notes and signs while others made new additions.

Police blocked off Water Street, which runs along the park. A few nearby side roads also were closed.

There were also a slew of marshals wearing high-visibility vests, and organizers offered safety and de-escalation tips to kick off the demonstration. They also offered protesters water and Gatorade as the afternoon sun beamed down on the park.

Friday’s protest, organized by Biddeford Saco for Racial Justice, was just one of many in Maine this week in the wake of Guerrero’s killing.

Protests in Biddeford broke out soon after the 25-year-old Colombian immigrant was shot and killed Monday morning. Other demonstrations quickly followed around the state throughout the week, including a protest outside an ICE facility in Scarborough, a rally in Portland and a vigil in Lewiston.

But Friday afternoon’s protest had a lighter atmosphere than others held this week.

A large cluster of protesters huddled with their signs near Main Street, chanting — and singing, thanks to an assist by the Ideal Social Aid and Sanctuary Band. At the opposite end of the park, many protesters sought refuge in the shade to mingle and make signs.

Whether they were chanting their hearts out or calmly sitting on a bench with their signs propped against their knees, their message was clear: they’ve had enough.

Dale Ruttenberg, of Saco, said he’s normally “disgusted” with the Trump administration, but is especially so after Monday’s killing. He said he’s been protesting all week, from Biddeford to Scarborough and Portland.

“I’m here to do what I can,” he said. “This is what this country’s supposed to be about.”

Kathy Davis, of Shirley, Massachusetts, said she spends time in Kennebunk in the summer. She said she feels like the shooting in Biddeford on Monday happened “in my backyard.”

Davis said she’s been feeling “low and isolated” this week, but it was nice being surrounded by people with “good hearts” at the demonstration Friday.

“This has to end — this just has to end,” she said. “This country is better than this and we need to get it back.”

Carol Spencer, of Saco, said she’s been crying often this week.

“I’m just sad about the cumulative message of hate,” she said.

Spencer said she has a friend who was taken by ICE and has since been released. She noted they have been waiting years for their immigration case to be settled.

“People say they’re here illegally, but they’re not given a chance to present their case in court,” Spencer said.

Organizers called the protest a wrap around 5:45 p.m., but about 100 people orchestrated an impromptu march from the park to the corner of Hill and Pool streets, where Guerrero was killed. They stopped there for about 10 minutes to fill the air with chants.

On their way back to the park, they chanted, “Say it loud, say it clear, Johan should still be here!”

More protests are to follow Saturday.

A coalition of immigrant rights groups, labor unions and community organizations gathered Friday at Portland City Hall to announce a National Day of Action at 3 p.m. Saturday in Monument Square.

Speakers called for state and federal investigations into Guerrero’s death, greater transparency around ICE operations and for Congress to defund the agency. They urged Mainers to keep protesting and rally around expanded immigrant rights.