Chicago's black firefighters and paramedics are calling on Mayor Rahm Emanuel to replace Fire Commissioner Jose Santiago. The group, represented by the African-American Firefighters and Paramedics League, is also asking the U.S. Department of Justice to expand its investigation into the Chicago Police Department to include the Chicago Fire Department.

The federal civil rights investigation into the Chicago Police Department is now underway. Federal officials will meet with Mayor Rahm Emanuel tomorrow and spent Wednesday with top police officials.

Exclusive: “Chicago Tonight” has learned that U.S. Department of Justice officials are scheduled to arrive in Chicago on Wednesday as the civil rights investigation into the police department gets underway. 

The Laquan McDonald shooting has brought the police union under fire. Is there a culture of cover-up among cops? Dean Angelo, president of the Fraternal Order of Police, joins us.