Ferguson Police Chief Thomas Jackson speaks to reporters following a demonstration in Ferguson, Missouri on August 11, 2014. People are upset because of the Ferguson Police shooting and death of an unarmed black teenager Michael Brown on August 9, 2014. In all about 20 businesses sustained damage after a candlelight vigil turned violent.   UPI/Bill Greenblatt
RMW07F8PFerguson Police Chief Thomas Jackson speaks to reporters following a demonstration in Ferguson, Missouri on August 11, 2014. People are upset because of the Ferguson Police shooting and death of an unarmed black teenager Michael Brown on August 9, 2014. In all about 20 businesses sustained damage after a candlelight vigil turned violent. UPI/Bill Greenblatt
Ferguson Police Chief Thomas Jackson answers questions from the media about his office's handling of the release of information following the shooting of Michael Brown in Ferguson, Missouri August 15, 2014. Picture taken August 15, 2014. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW POLITICS)
RM2E64P9RFerguson Police Chief Thomas Jackson answers questions from the media about his office's handling of the release of information following the shooting of Michael Brown in Ferguson, Missouri August 15, 2014. Picture taken August 15, 2014. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW POLITICS)
Ferguson Police Chief Thomas Jackson Ferguson police ID officer Darren Wilson as shooter of Michael Brown to a crowd of reporters and citizens on Friday, Aug. 15, 2014, at the burned QuickTrip located on W. Florissant in Ferguson, Mo. (Laurie Skrivan/St. Louis Post-Dispatch/MCT/Sipa USA)
RM2EY0J0RFerguson Police Chief Thomas Jackson Ferguson police ID officer Darren Wilson as shooter of Michael Brown to a crowd of reporters and citizens on Friday, Aug. 15, 2014, at the burned QuickTrip located on W. Florissant in Ferguson, Mo. (Laurie Skrivan/St. Louis Post-Dispatch/MCT/Sipa USA)
Ferguson, Mo., US. 15th Aug, 2014. Man at the Site of destroyed Quick Trip wearing T-shirt with message to protest after Police Chief Thomas Jackson release of the name of the officer that shot Michael Brown. Credit:  Gino's Premium Images/Alamy Live News
RME65RFEFerguson, Mo., US. 15th Aug, 2014. Man at the Site of destroyed Quick Trip wearing T-shirt with message to protest after Police Chief Thomas Jackson release of the name of the officer that shot Michael Brown. Credit: Gino's Premium Images/Alamy Live News
Ferguson, Missouri Mayor James Knowles announces that Police Chief Thomas Jackson will step down, in Ferguson, Missouri on March 11, 2015. Jacksons departure is being called a mutual separation and will be effective March 19. Jackson is leaving following a Justice Department report that accused the city's police and court system of racial bias.    Photo by Bill Greenblatt/UPI
RMW07J8XFerguson, Missouri Mayor James Knowles announces that Police Chief Thomas Jackson will step down, in Ferguson, Missouri on March 11, 2015. Jacksons departure is being called a mutual separation and will be effective March 19. Jackson is leaving following a Justice Department report that accused the city's police and court system of racial bias. Photo by Bill Greenblatt/UPI
Ferguson Police Chief Thomas Jackson ID's Ferguson police officer Darren Wilson as the shooter of Michael Brown to a crowd of reporters and citizens on Friday, Aug. 15, 2014, at the burned QuickTrip located on W. Florissant in Ferguson, Mo. (Photo by Laurie Skrivan/St. Louis Post-Dispatch/MCT/Sipa USA)
RM2EY0J0EFerguson Police Chief Thomas Jackson ID's Ferguson police officer Darren Wilson as the shooter of Michael Brown to a crowd of reporters and citizens on Friday, Aug. 15, 2014, at the burned QuickTrip located on W. Florissant in Ferguson, Mo. (Photo by Laurie Skrivan/St. Louis Post-Dispatch/MCT/Sipa USA)
Ferguson, MO, USA. August 15, 2014. Demonstrators react at the site of destroyed Quick Trip after Police Chief Thomas Jackson release of the name of the officer that shot Michael Brown.
RME6665WFerguson, MO, USA. August 15, 2014. Demonstrators react at the site of destroyed Quick Trip after Police Chief Thomas Jackson release of the name of the officer that shot Michael Brown.
Ferguson, Missouri Mayor James Knowles tells reporters that Police Chief Thomas Jackson will step down, in Ferguson, Missouri on March 11, 2015. Jacksons departure is being called a mutual separation and will be effective March 19. Jackson is leaving following a Justice Department report that accused the city's police and court system of racial bias.    Photo by Bill Greenblatt/UPI
RMW07J8WFerguson, Missouri Mayor James Knowles tells reporters that Police Chief Thomas Jackson will step down, in Ferguson, Missouri on March 11, 2015. Jacksons departure is being called a mutual separation and will be effective March 19. Jackson is leaving following a Justice Department report that accused the city's police and court system of racial bias. Photo by Bill Greenblatt/UPI
Michael Brown's mother, Lesley McSpadden, center, closes her eyes as attorneys Benjamin Crump, left, and Anthony Gray announce a wrongful-death lawsuit by Brown's relatives on Thursday, April 23, 2015, at the St. Louis County Circuit Court in Clayton, Mo. The suit names as defendants the city of Ferguson, former Police Chief Thomas Jackson and former police officer Darren Wilson. (Photo by Huy Mach/St. Louis Post-Dispatch/TNS) *** Please Use Credit from Credit Field ***
RM2EX3KP2Michael Brown's mother, Lesley McSpadden, center, closes her eyes as attorneys Benjamin Crump, left, and Anthony Gray announce a wrongful-death lawsuit by Brown's relatives on Thursday, April 23, 2015, at the St. Louis County Circuit Court in Clayton, Mo. The suit names as defendants the city of Ferguson, former Police Chief Thomas Jackson and former police officer Darren Wilson. (Photo by Huy Mach/St. Louis Post-Dispatch/TNS) *** Please Use Credit from Credit Field ***
Ferguson Police Chief Thomas Jackson (R) walks away from a media availability regarding his office's handling of the release of information following the shooting of Michael Brown in Ferguson, Missouri August 15, 2014. Picture taken August 15, 2014.  REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW POLITICS)
RM2CYCPJWFerguson Police Chief Thomas Jackson (R) walks away from a media availability regarding his office's handling of the release of information following the shooting of Michael Brown in Ferguson, Missouri August 15, 2014. Picture taken August 15, 2014. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW POLITICS)
Ferguson, MO, USA. August 15, 2014. Demonstrators at the site of destroyed Quick Trip react after Police Chief Thomas Jackson release of the name of the officer that shot Michael Brown.
RME66662Ferguson, MO, USA. August 15, 2014. Demonstrators at the site of destroyed Quick Trip react after Police Chief Thomas Jackson release of the name of the officer that shot Michael Brown.
Ferguson, Missouri Police Chief Thomas Jackson shown in this August 11, 2014 file photo will step down, it was announced in Ferguson, Missouri on March 11, 2015. Jacksons departure is being called a mutual separation and will be effective March 19. Jackson is leaving following a Justice Department report that accused the city's police and court system of racial bias.    Photo by Bill Greenblatt/UPI
RMW07J8MFerguson, Missouri Police Chief Thomas Jackson shown in this August 11, 2014 file photo will step down, it was announced in Ferguson, Missouri on March 11, 2015. Jacksons departure is being called a mutual separation and will be effective March 19. Jackson is leaving following a Justice Department report that accused the city's police and court system of racial bias. Photo by Bill Greenblatt/UPI