Thompson made strong, divisive remarks outside Lt. Bob Kroll's home in Hugo last month, leading to calls for the DFL to drop its support for the candidate.
A new policy enacted in October prohibited official police uniforms be worn during political appearances without approval.
The controversial police federation chief lent his support to the Senate candidate.
The controversial Minneapolis police union head gave his latest comments in a radio interview.
Protesters were demonstrating outside the home of Collin and her husband, Minneapolis police union chief Bob Kroll.
Kroll's leadership of the Minneapolis police union has been under scrutiny.
The controversial union leader held several interviews on Monday and Tuesday.
Kroll condemned "incompetent leadership" and demanded more video of the incident.
The union is seen as a barrier to reform within the MPD.
BMTN has obtained the police report from the Washington County Sheriff's Office.
The protest is calling for the Twin Cities TV station to take action.
"He antagonizes and disparages members of the black community," Minnesota AFL-CIO President Bill McCarthy said.
Ward 3 councilor Steve Fletcher pulled no punches.
Bob Kroll commended officers and bashed leadership in a letter to officers.
The proceeds from the shirt go to union-supported charities.
The ruling prevents officers appearing on camera at political events and advertisements.