Parts of the city of Chicago are started looking different Monday, just one week before the start of the Democratic National Convention. And as crews start putting up fences and other barriers around the United Center and McCormick Place, the head of the Chicago Police Department said his officers will act quickly if they see demonstrations around the DNC turn violent. WBBM Political Editor Craig Dellimore begins our coverage from City Hall.

Photo by E. Jason Wambsgans/Chicago Tribune/Tribune News Service via Getty Images

<p>Parts of the city of Chicago are started looking different Monday, just one week before the start of the Democratic National Convention. And as crews start putting up fences and other barriers around the United Center and McCormick Place, the head of the Chicago Police Department said his officers will act quickly if they see demonstrations around the DNC turn violent. WBBM Political Editor Craig Dellimore begins our coverage from City Hall.</p>
<p>Photo by E. Jason Wambsgans/Chicago Tribune/Tribune News Service via Getty Images</p>

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