A demonstrator holds a placard at the National Nurses United rally in Chicago, Illinois, May 18, 2012 ahead of the NATO 2012 Summit. Former Rage Against the Machine guitarist Tom Morello told a crowd at a nurses rally in downtown Chicago that someone should "put those NATO criminals in animal cages and crank Rage Against the Machine 24 hours a day."    AFP PHOTO/Jim Watson        (Photo credit should read JIM WATSON/AFP/GettyImages)