
The 1968 protests at the Democratic National Convention saw some 600 people arrested over the course of a week. But this week marks the 20th anniversary of the largest mass arrest in Chicago history, of nearly 900 people in one evening.
On March 20, 2003, more than 18,000 peace activists marched down Lake Shore Drive — with police permission — halting traffic in protest against the War in Iraq that began the previous night. Activists planned to go down Michigan Avenue, but at Michigan and Oak, a standoff transpired between police and activists. Police then trapped, attacked and arrested activists by the hundreds.