Court Cases

The ACLU of Colorado filed a class-action lawsuit against the Trump administration to enjoin ICE from conducting warrantless arrests in Colorado without probable cause that the person is a flight risk and in the country without proper legal documentation. On November 25, 2025, a federal judge found ICE had unlawfully arrested each of the named plaintiffs, certified a class of similarly situated individuals, and enjoined ICE from arresting anyone in Colorado without a warrant without first making the probable cause findings required by law.

The ACLU of Colorado filed a lawsuit challenging Boulder’s ordinance that criminalizes the city’s unhoused residents by making it a crime to sleep outside with a blanket.

The ACLU of Colorado joined civil rights groups and religious organizations to file an Amicus Brief arguing that there is no Free Exercise Clause violation when a governmental body conditions a public benefit on a religion-neutral and generally applicable requirement.

The ACLU of Colorado filed an amicus brief with the Colorado Freedom of Information Coalition urging the Colorado Court of Appeals to uphold a ruling that fees for body-worn camera footage are not authorized by Colorado’s Enhance Law Enforcement Integrity Act passed in 2020.

In a precedent setting opinion, the court stated that “the use of less-lethal munitions—as with any other type of pain-inflicting compliance technique—is unconstitutionally excessive force when applied to an unthreatening protester who has neither committed a serious offense nor attempted to flee."

This case concerns the Colorado Springs Police Department’s use of unconstitutional warrants to comb through activists’ digital data in retaliation for their political speech and association.

We urge the CO Court of Appeals to not make it harder to sue the government over violations of the CO Open Meetings Law.