the prosecutors were pressured and didn’t have the guts to tell their bosses to shove it
The Brownshirts at work.
They fan out into local jurisdictions whenever it looks like a “white-on-black” confrontation has ended badly for the “black” involved. Sometimes, as in this instance, the “white” involved was not exactly of the right profile (white “redneck cracker”), so George Zimmerman had to be repainted as a “white Hispanic” (whatever that is).
The “Just-Us” department has been in on this from the beginning, and they found a few willing stooges at the state level in Florida to carry out their dirty work.