Specifically, the complaint says Dugan assisted Eduardo Flores-Ruiz, a Mexican immigrant, avoid being arrested by federal immigration officials at the Milwaukee County Courthouse after he appeared in her courtroom for a pre-trial conference on April 18.

A crowd of more than 200 protesters gathered to oppose County Circuit Judge Hannah Dugan's arrest and felony charges.

Milwaukee County Circuit Judge Hannah Dugan was arrested Friday morning by the FBI for allegedly assisting an undocumented immigrant in avoiding arrest after he appeared in her courtroom last week.