Two for-profit prison companies have lost major contracts in Denver over their work in immigrant detention, as backlash to President Donald Trump’s immigration policy continues to mount.

The stunning $10.6 million rebuke to the two firms, CoreCivic and the GEO Group, was led by newly elected city council member Candi CdeBaca, who won in June on a radical platform backed by the Democratic Socialists of America. CdeBaca’s stand on Monday against the firms was her first major effort since being sworn in, and she expected to be a lone vote of dissent.

Instead, moved by the plight of those kept in camps run by CoreCivic and the GEO Group, and galvanized by opponents — organized by CdeBaca — at the public meeting, the council delivered an unexpected 8-4 rejection, ending the firms’ contracts to run halfway houses on behalf of the city.

CoreCivic and the GEO Group run the bulk of U.S. Immigration and Customs Enforcement’s detention centers. The GEO Group also runs an immigration detention center in Aurora, Colorado, which has become a source of local controversy. The disturbing images beaming from the border, and pressure from repeated protests outside the detention center, persuaded council members that their financial support of for-profit companies made them complicit in ICE abuses.

The vote was another signal of the DSA’s rising influence (even as its recent national convention was lampooned on social media for its excessive displays of off-putting wokeness), and the willingness of mainstream politicians to follow the lead of organizers and activists making a stark moral argument.

CdeBaca told The Intercept that the effort can be traced to before her campaign, and that her work as a community organizer and social worker helped her rally opposition to the contracts. At her urging, the key meeting was packed with opponents of the firms, and experts lined up to testify against them. Broad-based community opposition — from Colorado People’s Action, Colorado Criminal Justice Reform Coalition, the American Civil Liberties Union, Black Lives Matter, Colorado Immigrant Rights Coalition, and DSA — made an impact on council members.

“I brought the testimony to the table so my colleagues could hear the facts and initially did not believe that anyone would vote with me,” she said. “So I was very impressed by the courage my colleagues displayed to vote with me on a very controversial issue knowing we had no power to amend that contract.”

The council’s vote was all the more remarkable because there were credible and sympathetic arguments against taking radical action. Some 500 people are currently in the four halfway houses run by CoreCivic and two run by the GEO Group, and are now at risk of being returned to prison. That’s not their certain fate, however, as parole is an additional option. Advocates of ending the contracts focused on the moral case to be made, and the potential for local community groups to run more humane halfway houses in the future.

“If we renew the contract, we’re supporting organizations that provide valuable services to more than 500 people and 140 employees,” said council member Chris Hinds, spelling out the dilemma. “We’re also supporting organizations that put kids in cages, run concentration camps.”

CdeBaca acknowledged the moral quandary. “I am very concerned about the 500 beds that we jeopardized by this vote, and I want to see a plan to make sure that we transition out of these contracts in a way that is just for the residents of these facilities,” she said, arguing that a transition could be made in six to 10 months, but the power to do it was in the hands of the mayor and the firms. “There’s essentially a monopoly emerging here, not just in Denver but nationally with CoreCivic and GEO and that is a problem.”

For now, the halfway houses are being kept open without a contract, and the firms are under no obligation to close them immediately, as corrections officials and city policymakers transition to a new system. Short-term contracts are also possible as the city works toward a system that returns the re-entry programs to local control and away from the for-profit operators — as it largely was before the firms bought out the organizations doing the local work. Amanda Gilchrist, a spokesperson for CoreCivic, said that the firm would not immediately shutter and send its charges back to jail. “While several questions exist (about what happens going forward), we have agreed to keep our doors open to the clients we serve in the hopes of finding a resolution that works for everyone,” she wrote in an email.

Gilchrist also panned the City Council’s “deeply misguided decision,” which she said was “a result of political recklessness.” Judges will, for now, lose the option of sentencing defendants to halfway houses, making the alternative of prison more likely. More than a hundred inmates in prison who were due to arrive in GEO Group and CoreCivic homes are now in limbo. A residential substance use disorder clinic run by CoreCivic will close, and other supports will no longer be available, she said, adding that CoreCivic does not run any immigrant detention centers in Colorado specifically. “These politicians have failed their community, which will be less safe and healthy, and those in its criminal justice system, who will have much less support to get their lives back on track,” Gilchrist said. “Denver now faces a dire situation.”