As a comparison, has anyone ever seen 'Costa Del Street Crime'. The police are allowed to give any trouble makers a quick slap round the head to calm them down. nothing to actually cause pain, but a little warning. This method seems to work well and the situation is sorted without any further action.
These peole moaniong about heavy handed police, should think themselves lucky that they dont live abroad, where it happens day in day out on a regular basis, and is actually part of the job, and it certainly doesnt even compare to the type of 'abuse' over here.