You know what? I'm having a change of heart.
I used to be quite critical of cammers but now I'm slowly coming around to a "more power to them" attitude; largely because - whether I personally agree with their methods - they are at the vanguard of promoting a discussion which is becoming slightly more pressing by the day.
Firstly, it promotes discussion among fellow cyclists about how to ride safely and road awareness at the very least, and normally also how to best deal with this kind of confrontation. But more importantly it is slowly cranking up the debate on road safety itself.
I don't mean this as a foster of the "us against them" mentality, but no matter our own inwards criticisms of each other on how cyclist x has dealt with situation y, we are still collectively the vulnerable road group.
Maybe it is I, who is rather insular on the bike and brushes off close passes and poor driving with a mutter and a very occasional Rear View Mirror Death Stare, who would never dream of chasing down a driver for the benefit of "road-side education", who feels the best attitude to display is more inclined towards an "I survived, I can't be arsed to reason with a moron so let it be" lean, that is being selfish and counter-productive to the wider "problem".
Or maybe that whole paragraph is bull-hockey.
But I fear that one day - and I take absolutely no relish in making this prediction - one of these clips will be uploaded from a helmet who's prior occupant is no longer with us, the debate will go nuclear, and then all these little snipits we've had (whilst seemingly almost 'trivial' right now) will just add weight and momentum to the argument.
I may not agree with a lot of the "vigilantes" methods, but one day I may just personally be thankful that they've done so.