Peter - Wrong.... The Obama Justice Department investigated if Browns Civil Rights were violated. They did not find 'find him innocent" as you claim and expected Obama to state publicly. Only Trump lies about shit like that .
They found his civil rights were not violated.
What you IGNORED was the root problem, which the Justice Department did not investigate and that is Fergusen "Policing for Profit".
That is the core problem and the results are a public that don't get justice and COPS who are put in a terrible position because those in Charge are as Matt says "LAZY"
Your copious research of "Obama's Justice Department" missed this.... Bad Policy is the problem.
"What it found included routine violations of black residents’ civil rights. For example, the DOJ found that black drivers were more than twice as likely as white drivers to be searched during traffic stops, but 26 percent less likely to be found with contraband. Even so, black drivers were more likely to be cited and arrested during a traffic stop.
The report also found that 88 percent of documented police use-of-force cases involved blacks, and in particular juveniles and people with mental health problems or cognitive disabilities."
https://www.pbs.org/wgbh/frontline/article/how-the-doj-reforms-a-police-department-like-ferguson/