
Buster hasn't shown any aggression to anything (yet, touch wood), but he was incredibly fixated & exited by children, he used to pull like a train, I had a hells job trying to hold him & nothing would get his attention. I changed my tactics, for a while as soon as i saw children just before Buster had change to get wound up I would pull a treat out, say 'whats this' and he would look at the treat, I would then say 'walk nice' (command for walking on a slack lead) and if he walked on a slack lead & concentrated on me he would get a treat. Now, most of the time, when he sees kids he will look at me for a treat and ignore the kids :) (I just need to phase the treats out to random now).
So, to sum up all my waffle, distraction with treats may be worth a try. it has also made Buster think that kids = be nice & calm :)
ETA - Doh!!, only just read Daxters post - similar thing positive association :)
ETA again - sorry Astarte you allready came up with this idea. Note to self - read ALL posts before blabbering on :(