Campaigners took inspiration from Three Billboards Outside Ebbing, Missouri to call for gun control in the wake of a school shooting that killed 17.
It is the second time in a week that activists have emulated the movie after Grenfell Tower protesters carried out a similar stunt in London.
The Florida placards were driven around Miami on Friday to put pressure on its Republican senator after the high school massacre this week in Florida.
Campaigners took inspiration from Three Billboards Outside Ebbing, Missouri to call for gun control in the wake of a school shooting that killed 17.