On this edition of Chicago Tonight: The Week in Review with Joel Weisman, four arrests were made in the brutal shooting of 13 people in a Back of the Yards park. Police Superintendent Garry McCarthy calls it a clear example of why the state needs to change gun laws. Former Cook County Commissioner and Chicago Ald. William Beavers is sentenced to six months in prison, while former Ald. Ambrosio Medrano gets his third corruption conviction. The Chicago Teachers Union blasts Chicago Public Schools for finding millions of dollars to build and rehab schools just months after closing 50 schools. Confusion abounds as ObamaCare is set to debut. And in sports, the 3-0 Bears head to division rival Detroit as underdogs.

Guests:

- Cheryl Corley, National Public Radio

- Bruce Dold, Chicago Tribune

- Bruce Japsen, Forbes

- Lester Munson, ESPN Sports

Watch our panel’s web-exclusive conversation in Web Extra: The Week in Review: 9/27.

Here is a roundup of Chicago Tonight‘s web stories from this week:

Monday, September 23:

-Sen. Durbin on Government Shutdown

-Chicago Violence

-Pope Francis Envisions Church as a "Home for All"

-"Big Cat" Williams on Bears vs. Steelers

-Blair Kamin on DePaul Arena & IL Capitol Renovation

-Viewer Feedback:Ventra & Flu Vaccines

- Clapton Plays Skokie - Part Two

Tuesday, September 24:

-4 Charged in South Side Park Mass Shooting

-Analysis of Chicago Violence

-New Chicago Public Schools

-Will Iran & U.S. Break Diplomatic Impasse?

-McCormick Place Debuts Midwest’s Largest Rooftop Garden

-The Architecture of Barry Byrne

- Web Extra: Voices from Nairobi

- Janis Interrupted

- Dance Skin

Wednesday, September 25:

-Mayor Emanuel on Tougher IL Gun Laws

-Study: Modernizing Chicago Water Mains May Raise Lead Levels

-Alan Dixon

-The Dark Energy Camera

-Leading Dolphin Researcher

- Just a Regular Guy Named Bunky Echo-Hawk

Thursday, September 26:

-Judge Rules IL Lawmakers Must Be Paid

-Looming Shutdown

-Health Care Marketplace Costs

-The Fracking Boom's Other Frontier

-Atchison Blue

-The Story of Curtis Mayfield

-Viewer Feedback:New Schools, Chicago Violence & IL Gun Laws

- Vivid Vivian Maier: The One Who Got Away

Friday, September 27:

- Weekend Events Around Town: 9/27 – 9/29

- Web Extra: The Week in Review