Nato summit protests - in pictures

A woman asks for calm as she stands in front of a row of riot police Photograph: Andrew Kelly/Reuters Police clash with demonstrators protesting against the Nato summit during a march Photograph: Scott Olson/Getty Images Demonstrators link arms as they protest Photograph: Joshua Lott/Getty Images A demonstrator receives medical attention as he lies injured Photograph: Joshua Lott/Getty Images Protesters and Chicago police confront each other near the Nato conference venue Photograph: Spencer Platt/Getty Images A bloodied demonstrator calls out Photograph: John Smierciak/EPA A police officer swings a baton at protesters Photograph: Andrew Kelly/Reuters A protester lies detained after clashing with police Photograph: Adrees Latif/Reuters Police corral the last of the demonstrators on Cermak Avenue Photograph: John Smierciak/EPA Police take a demonstrator into custody during street fighting Photograph: John Smierciak/EPA Demonstrators flash the peace sign Photograph: Eric Thayer/Reuters Chicago police subdue a protester Photograph: Joe Compean/Getty Images A protester stands at the Art Institute where Michelle Obama was hosting a dinner for the spouses of Nato dignitaries Photograph: Charles Rex Arbogast/AP Police prepare to move in during the protest Photograph: Tasos Katopodis/AFP/Getty Images