Occupy protesters in Montreal were dismayed to find they had been marked by police with a special ink that is only visible in UV light after being arrested during a raid of Victoria Square Friday.
Apparently the ink lasted four days and irritated the skin of some protesters.
Let me see, where have I heard of labeling people with numbers before… hey, no need to reinvent the wheel, right?
ADDENDUM: via the same set of sources, there has been evidence since 2009 that DoD training courses instruct that “protests” are to be regarded as “low-level terrorism.” That may not have been important before the law allowed/required the military to commit even American citizens to indefinite detention without due process for association with terrorism, but now I’d say it’s kind of a big deal. Wouldn’t you? I ask you, because it’s your First Amendment that is being revoked.