After a peaceful march by protesters and Iraq war veterans from Grant Park to McCormick Place, Chicago Police and protesters, spurred on by the anarchist group Black Bloc, clashed when the crowd failed to disperse after the protest. This is a summary of video, tweets and stories by Red Line Project staff, along with eyewitness accounts tweeted by protesters, media and others on-site.

The final day of the NATO summit included protests by demonstrators in front of the Chicago headquarters of Boeing, which manufactures many military aircraft. The protests were largely peaceful -- one reported arrest -- following a day of clashes between police and protestors outside McCormick Place. After the Boeing protest, a group of protestors marched through the city, stopping at various spots for small rallies. One target was Obama's campaign headquarters.