You left out:
Jury finds not guilty.
Riots.
Federal charges for the same events. Mostly black jury.
Zimmerman gets convicted.
I don’t think the feds will charge after the evidence in this trial. There is no video of a beating like the Rodney King trial.
Also, Zim isn’t a LEO
While I wouldn't put it past them to try , in order to bring a federal civil rights action, the bad actor must be acting under color of state law. Zimmerman was a private citizen. An Example: In the Ridney King case, the cops were acquitted in the state court but since they were state actors they could be sued for deprivation of civil rights.