It was a big week in criminal justice, politics and education news in the Chicago area.

We heard closing arguments in the trial of three Chicago Police officers accused of a cover-up in the 2014 fatal police shooting of Chicago teen Laquan McDonald.

Candidates for Chicago mayor submitted challenges to their opponents’ petition signatures and racked up endorsements from prominent labor and education leaders.

Meanwhile, teachers at Acero Schools charter network continue their historic strike for better pay and smaller class sizes. It’s the first charter school strike in the nation.

Morning Shift host Jenn White dives into those stories and more with WBEZ criminal justice reporter Patrick Smith, Daily Line managing editor and City Hall reporter Heather Cherone and Chicago-based freelance reporter Kim Bellware.