Video - National News
Posted on May 2, 2013 at 5:14 AM
Updated Thursday, May 2 at 9:20 AM
After a day of peaceful marches, the May Day protests in Seattle grew confrontational at night, with officers using tear gas and "flash bangs" to control the crowd. Police say 17 people were arrested and eight officers were injured.
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Credit: BRIAN GLENN / WFAA