Florida sheriff, flanked By deputies in face masks, warns heroin dealers

Probably effective and sort of hilarious...
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Above an ominous soundtrack, Grinnell says he's received calls from concerned citizens about heroin overdoses. He wants drug dealers' addresses, he says.

Then, as the camera zooms in, he gets to the point.

"To the dealers, I have a message for you: we're coming for you," he says. "Enjoy looking over your shoulders, and constantly wondering if today's the day."

"Enjoy trying to sleep tonight, wondering if tonight's the night our SWAT team blows your front door off the hinges," he says. "We are coming for you."