I don't think you have that exactly right KK

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The article says: "The Justice Department has neither the authority nor the staffing to EXPAND its investigation of unconstitutional police and court practices from Ferguson to surrounding municipalities, legal experts say." (my bold). Looks like the DOJ has authority to harass Ferguson, but not surrounding cities.
And it should be called the DOIJ -- Department of InJustice. The way they treated George Zimmerman and Officer Wilson as guilty, even after proven innocent, was unconscionable. The two villains in those persecutions haven't been confronted with their perfidy: Obama & Holder. Both immediately sided with the 'black' version of those cases, with public statements of sympathy for supposed black victims, presupposing the guilt of the non-black 'defendants.' And Obama sent Holder out as his avenging angel to prosecute them in the court of public opinion.
In the Michael Brown incident, Holder had FBI eyewitness testimony four days after the shooting contradicting the 'hands-up' false narrative. And early forensic evidence of the blood trail on the ground, indicated Brown was moving toward the officer, not standing still. And evidence from blood in the police car showed some kind of struggle had preceded the final shooting. And of course, the video from the convenience store security tape showed that Brown was a physically menacing male.
Nevertheless Obama and Holder immediately sided with the 'hands-up' version: an unarmed teenager unjustly killed while surrendering to a white cop. Obama issued a statement sending his "prayers and deepest condolences" to the Brown family and the community, urging everyone to "remember this young man through reflection and understanding." He sent other representatives to the funeral, and Holder to commiserate with the family. These all implicit signs indicating Brown was unjustly shot.
All through the process, when they had evidence backing Officer Wilson, through the protests and rioting and arson up to and following the Grand Jury decision, they continued to be mute about what they knew, playing racial politics with the facts, and allowing Wilson to become a target of hate throughout the U.S.
The sad but evident truth is neither Obama nor Holder can be trusted to be objective when race is involved. That's why no one should accept this recent Ferguson Police Department report at face value-- because when it comes to black verses white, Obama's administration appears to be 2-faced.

_________________
The problem with putting two and two together
is that sometimes you get four,
and sometimes you get twenty-two.
-Dashiell Hammett