WBEZ brings you fact-based news and information. Sign up for our newsletters to stay up to date on the stories that matter.It’s been a challenging week politically for Mayor Rahm Emanuel. He fired his police Superintendent amid a backlash over how the city handled the case of Laquan McDonald, who was shot and killed by police. He’s faced criticism from aldermen, the press, the public. And there’s been a growing chorus of folks calling for a Department of Justice investigation into Chicago police practices from powerful people like Lisa Madigan, Dick Durbin and Hillary Clinton. WBEZ city politics reporter Lauren Chooljian and Sun-Times Columnist Mary Mitchell discuss how the week was for the mayor and for Chicago.