Arrest them. Threats of violence are illegal everywhere and generally carry prison terms of 2 - 20 years. As it applies to Florida....
"Can you go to jail for threatening someone in Florida?
Written Threats is classified as a second degree felony, with penalties of up to 15 years in prison. Written Threats carries a Level 6 offense severity ranking under the Florida Criminal Punishment Code."
I'm sure De Satan will get right on that, belonging to the 'law and order' party after all.
“With the first link, the chain is forged. The first speech censured, the first thought forbidden, the first freedom denied, chains us all irrevocably." - Aaron Sati