That's normally true, but here there is a media feeding frenzy and a crazy bitch making an accusation on mighty thin content. Good luck for the PD, Florida law has such a broad definition of simple battery, that the case can be forward to the people who make the big bucks.
Smart move on the part of the PD, it is out of the line of fire, and the press and the accuser are not exhausted just yet. The cops can go about their usual business, one less thorn in their side. The prosecutor is going to be accused (again) of being partisan, the only thing we don't know yet is how much ink the press is going to spill against him. It's a given that the press is going to double down on the accusation against Lewandowski.
https://www.youtube.com/watch?v=D54zPZ_jg6g&feature=youtu.be