El Paso County Sheriff Bill Elder "holds prisoners in custody for days, weeks and even months after state law requires their release," the complaint says.
Eddie Soto, the field director for Denver Latino-focused nonprofit Servicios de La Raza, on a new education campaign.
Officials are encouraging probation officers to offer up more information to immigration authorities about their clients than the law requires.
The lawsuit involves about 62,000 immigrants who've been detained at the U.S. Immigration and Customs Enforcement facility in Aurora since 2004.
Anticipation of business-friendly policies has led to reports of near-euphoric levels confidence during most of the Trump presidency.
"Both of us support a pathway to citizenship for the dreamers, and both of us support border security," said Sen. Michael Bennet, a Democrat.
Even tourists who stop into a dispensary for a joint during a visit to the Mile High City risk running afoul of customs agents who are increasingly searching phones and social media.
In a rare interview, the head of Immigration and Customs Enforcement in Colorado says things different under President Trump.
Removals have more than doubled in a year in Colorado and Wyoming, from 1,033 to 2,535 through September of last fiscal year. Arrests are up too, though not by as much.
Continuing in protest of President Trump one year later after the first march — and now in the light of the #MeToo movement — cities nationwide hosted rallies, including Denver.