Working My Way Through USA Today's Really Comprehensive List Mass Murders 2006-17

These are mass murders that did not have white suburban victims, so CNN was not going to cover them.

Chicago, Ill. (2010)
2/26/2010: Prosecutors charged three men with the murder of three men in a drug-related incident in which the killers slit the victims’ throats.  Police shot dead one of the suspects in a car chase the murders.  The same murderers also committed mass murders on 5/18/2010 and 9/2/2010.
Category: residential
Suicide: no
Cause: drug business
Weapon: knife[1]Chicago, Ill. (2010)
5/18/2010: Prosecutors charged three men with the murder of three men in a drug-related shooting.
Category: public
Suicide: no
Cause: drug business
Weapon: unknown[2]Chicago, Ill. (2010)
9/2/2010: The same happy band of murderers murdered four other persons, motive unknown.
Category: residential
Suicide: no
Cause: unknown
Weapon: unknown[3]

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[1] “Southwest Side Man Pleads Not Guilty To Role In Triple Murders,” CBS Chicago, Jul. 18, 2012, https://chicago.cbslocal.com/2011/07/18/southwest-side-man-pleads-not-guilty-to-role-in-triple-murders/, last accessed June 27, 2019.
[2] “Southwest Side Man Pleads Not Guilty To Role In Triple Murders,” CBS Chicago, Jul. 18, 2012, https://chicago.cbslocal.com/2011/07/18/southwest-side-man-pleads-not-guilty-to-role-in-triple-murders/, last accessed June 27, 2019.
[3] “Southwest Side Man Pleads Not Guilty To Role In Triple Murders,” CBS Chicago, Jul. 18, 2012, https://chicago.cbslocal.com/2011/07/18/southwest-side-man-pleads-not-guilty-to-role-in-triple-murders/, last accessed June 27, 2019.