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    • Advancing liberty
    • Closed
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    • Defending liberty
    • Filed
    • Historic
    • In federal trial court
    • In State Supreme Court
    • In state trial court
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    • Landmark case
    • Lost
    • Lost appeal
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    • Open
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All Cases

242 Court Cases
Court Case
Jun 13, 2025
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  • Freedom of Expression & Religion|
  • +3 Issues

Crookshanks, et al. v. Elizabeth School District

The ACLU of Colorado sued the Elizabeth School District because it banned and removed at least 19 books from school libraries based on the school board’s disagreement with the ideas they contain. The plaintiffs include students who have a right to access those books...
Court Case
Jun 12, 2025
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  • Racial Justice|
  • +3 Issues

Ruby Johnson v. Gary Staab and Gregory Buschy of the Denver Police Department

We sued two Denver Police Officers for searching our client's home based on an illegal search warrant lacking probable cause.
Court Case
May 19, 2025
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  • Unhoused Peoples' Rights|
  • +1 Issue

Feet Forward, et al. v. City of Boulder, et al.

Court Case
May 07, 2025
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  • Immigrant Justice|
  • +1 Issue

D.B.U. et al. v. Donald J. Trump et al.

The ACLU of Colorado filed an emergency class action lawsuit in the U.S. District Court for the District of Colorado to halt removals of Coloradans under the Alien Enemies Act.
Court Case
Apr 21, 2025
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  • Immigrant Justice|
  • +3 Issues

ACLU, et al. v. U.S. ICE

The American Civil Liberties Union and ACLU of Colorado filed a lawsuit against ICE to obtain records regarding the agency’s potential plans to expand immigration detention across Colorado and Wyoming.
Court Case
Mar 25, 2025
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Citizens Project et al. v. City of Colorado Springs

Court Case
Mar 17, 2025
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  • Criminal Legal Reform|
  • +1 Issue

Beagle v. People (Amicus)

The ACLU of Colorado filed an amicus brief arguing that Colorado’s Sexually Violent Predator designation is punishment.
Court Case
Feb 24, 2025
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  • Voting Rights|
  • +1 Issue

League of Women Voters of Greeley, et al. v. Board of County Commissioners of Weld County (Amicus)

Voters challenged the election map adopted by the Weld County Board of County Commissioners arguing that it must comply with the Colorado state redistricting statutes.
Court Case
Feb 19, 2025
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Griffith v. El Paso County, et al. (Amicus)

Court Case
Jun 13, 2025
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Court Case
Jun 13, 2025
  • Freedom of Expression & Religion|
  • +3 Issues

Crookshanks, et al. v. Elizabeth School District

The ACLU of Colorado sued the Elizabeth School District because it banned and removed at least 19 books from school libraries based on the school board’s disagreement with the ideas they contain. The plaintiffs include students who have a right to access those books...
Explore Case
Court Case
Jun 12, 2025
Placeholder image
Court Case
Jun 12, 2025
  • Racial Justice|
  • +3 Issues

Ruby Johnson v. Gary Staab and Gregory Buschy of the Denver Police Department

We sued two Denver Police Officers for searching our client's home based on an illegal search warrant lacking probable cause.
Explore Case
Court Case
May 19, 2025
Placeholder image
Court Case
May 19, 2025
  • Unhoused Peoples' Rights|
  • +1 Issue

Feet Forward, et al. v. City of Boulder, et al.

Explore Case
Court Case
May 07, 2025
Placeholder image
Court Case
May 07, 2025
  • Immigrant Justice|
  • +1 Issue

D.B.U. et al. v. Donald J. Trump et al.

The ACLU of Colorado filed an emergency class action lawsuit in the U.S. District Court for the District of Colorado to halt removals of Coloradans under the Alien Enemies Act.
Explore Case
Court Case
Apr 21, 2025
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Court Case
Apr 21, 2025
  • Immigrant Justice|
  • +3 Issues

ACLU, et al. v. U.S. ICE

The American Civil Liberties Union and ACLU of Colorado filed a lawsuit against ICE to obtain records regarding the agency’s potential plans to expand immigration detention across Colorado and Wyoming.
Explore Case
Court Case
Mar 25, 2025
Placeholder image
Court Case
Mar 25, 2025

Citizens Project et al. v. City of Colorado Springs

Explore Case
Court Case
Mar 17, 2025
Placeholder image
Court Case
Mar 17, 2025
  • Criminal Legal Reform|
  • +1 Issue

Beagle v. People (Amicus)

The ACLU of Colorado filed an amicus brief arguing that Colorado’s Sexually Violent Predator designation is punishment.
Explore Case
Court Case
Feb 24, 2025
Placeholder image
Court Case
Feb 24, 2025
  • Voting Rights|
  • +1 Issue

League of Women Voters of Greeley, et al. v. Board of County Commissioners of Weld County (Amicus)

Voters challenged the election map adopted by the Weld County Board of County Commissioners arguing that it must comply with the Colorado state redistricting statutes.
Explore Case
Court Case
Feb 19, 2025
Placeholder image
Court Case
Feb 19, 2025

Griffith v. El Paso County, et al. (Amicus)

Explore Case
1 2 3 4 5 … 27

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