The Chicago Race Riots were the most severe of twenty five riots that took place during the Red Summer following the First World War. Racial frictions in Chicago had been intensified by African American migration to the North, overcrowding, growing militancy among black war veterans, and competition for industrial work. Horrific incidents in these riots jolted the American public out of indifference. President Wilson named the white race as the aggressor in the riots, and greater efforts were made to achieve racial harmony, both socially and legislatively.
Editors. "Race riots in Chicago". The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=12707, accessed 25 November 2015.]