Federalism 101 - it is not for the Federal DOJ to enforce State laws.
You would be well-advised to more-closely reread the text you cited.
If Florida laws have been broken then Florida law enforcement may issue arrest warrants w/o consulting Holder, the DOJ, or anybody else. Again, why haven't they (Florida Law Enforcement) issued arrest warrants?
I guarantee you that if the Black Panthers start passing out “Wanted: Dead or Alive” posters in Maricopa Co, AZ, Sheriff Joe Arpaio will immediately arrest & jail them.