Protesters are seen walking by police as they demonstrate in downtown Chicago, on the eve of the NATO summit on May 19, in Chicago, Illinois. Three men have been charged with plotting to attack ... more 

Protesters are seen walking by police as they demonstrate in downtown Chicago, on the eve of the NATO summit on May 19, in Chicago, Illinois. Three men have been charged with plotting to attack President Barack Obama's campaign headquarters and lob Molotov cocktails at police as days of protest heated up ahead of the summit less