Editors. "Knights of Labor riot in Chicago". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18939, accessed 19 June 2013.]
Supporters of the Knights of Labor, an American workingman's organisation, hold a demonstration in Chicago. When a protester throws a dynamite bomb at the police, eight officers and unknown numbers of protesters are killed. Eight men are tried for murder and four executed as a result of the incident.