May Day protests turn violent in Seattle

Protesters break windows on downtown businesses including American Apparel and NikeTown during a May Day rally on Tuesday, May 1, 2012 in downtown Seattle. About two dozen of the hundreds of protesters that participated in the march shattered windows and caused mayhem in Seattle. (AP Photo/Seattlepi.com, Joshua Trujillo) (AP)

A protester smashes a window at a Wells Fargo branch during a May Day rally on Tuesday, May 1, 2012 in downtown Seattle. Mayor Mike McGinn says he's making an emergency declaration allowing police to confiscate items that can be used as weapons following violent May Day protests that left storefronts and car windows shattered. (AP Photo/Seattlepi.com, Joshua Trujillo) (AP)

Grafitti is painted and a window is broken at an American Apparel store Tuesday, May 1, 2012, after it was vandalized during May Day protests in downtown Seattle. Hundreds of activists across the U.S. joined the worldwide May Day protests on Tuesday, with Occupy Wall Street members in several cities leading demonstrations and in some cases clashing with police. (AP Photo/Ted S. Warren)

A worker moves a mannequin away from a broken window at an American Apparel store, Tuesday, May 1, 2012, after it was damaged during May Day protests in downtown Seattle. Hundreds of activists across the U.S. joined the worldwide May Day protests on Tuesday, with Occupy Wall Street members in several cities leading demonstrations and in some cases clashing with police. (AP Photo/Ted S. Warren)

Pedestrians photograph a shattered window at am American Apparel store, Tuesday, May 1, 2012, after after it was damaged during May Day protests in downtown Seattle. Hundreds of activists across the U.S. joined the worldwide May Day protests on Tuesday, with Occupy Wall Street members in several cities leading demonstrations and in some cases clashing with police. (AP Photo/Ted S. Warren) (AP)

Protesters break windows at the Federal Courthouse in downtown Seattle during a May Day rally on Tuesday, May 1, 2012. Seattle Mayor Mike McGinn says he's making an emergency declaration allowing police to confiscate items that can be used as weapons following violent May Day protests that left storefronts and car windows shattered. (AP Photo/Seattlepi.com, Joshua Trujillo) (AP)