  Carlos Miller, who runs the Photography Is Not a Crime blog,
and veteran photojournalist Stretch Leford decided to test the
photography rules in Miami-Dade's metrorail system. Before
embarking on their test, they obtained written assurance from
Metro Safety and Security Chief Eric Muntan that there's no law
against non-commercial photography on the system.  The two
didn't make it past the first station before they were stopped.
Employees of 50 State Security, the private firm contracted to
provide the metro's security, stopped the pair first. They then
called in local police. The private firm and the police then
threatened the two with arrest, demanded their identification
(to check them against a terrorist watch list), demanded
multiple times that they stop filming, and eventually "banned"
Miller and Ledford from the metro system "for life" (though it's
doubtful they had the authority to do so).  Miller's account
here. Ledford's is here.  Here's the video:     • ||      "The
law is what we sez it is."