Hmm, now that I think about it (and after seeing T's post)...
Perhaps the only real similarity between the OP article and what I've been reading in Fry the Brain is the fact that the sniping takes place in a urban setting, that's it. And maybe the distances, but those might be a correlation.
Maybe these days, the really organized guerrillas care more about precision, since their targets often wear body armor, but it seems that for the most part, a guerrilla probably cares more about being on man whereas a security force HAS to be surgical. After all, the guerrilla sniper needs to make do with what they have (often times, these turn out to be old bolt actions ie Mausers, SMLE, etc)--we all know that those guns in those configuration aren't sub-MOA much less that they might have special FMJBT match grade ammo with Lapua brass.
The other thing I just realized was that a guerrilla sniper works when everything appears to be normal, whereas the police snipers are already dealing with a tense situation where the target might be aware. The clandestine can use the element of surprise, but the cops can't.
I'm glad this thread got brought up; it definitely gets you thinking.