EquiPortal........You may be interested in this link
http://www.youtube.com/watch?v=nlcvCACkZ8k........ ........it was discussed some time ago here, and may help you form an opinion.
In the context of 'NH', as in all training of horses, there is no place for aggression.
Understanding, empathy, compassion, patience, repetition, firmness, respect, trust.........from the trainer.......are all essential to kind and effective training of the horse.
Aggression or coercion on the part of the handler will sweep all that away in an instant and destroy any trust which may have been built.
Fear is a healthy emotion in both horses and humans.
Fear in horses can sometimes be used to great effect in their training if the handler recognises that it exists, when it increases, and how/when to react to decrease it......as when using 'advance and retreat', for example.
Without knowledge of that element of fear, particularly in the young horse, the handler may blunder through the training and, failing to recognise and allow for the fear-based reactions from the horse, may end up with more problems than solutions.
Fear in horses will certainly cause them to flee and, where that option is closed to them, they may be forced to resort to aggression.
Fear in humans, on the other hand, is very different.....particularly when it comes to fear of horses, and can cause many more problems than it can solve in their training.
I suspect that much of the aggression shown toward horses by humans is fear-based.
The person which Wally describes above probably reacted mainly out of fear in that situation, although pride and self consciousness probably played a role also.
That person would seem to have had no regard for that horse, and little understanding of how to work with, and get the best from, horses generally.
I have seen many situations where horses have been routinely (seemingly unthinkingly) met with aggression by owners/handlers, and most have been fear-based, possibly spawned of ignorance and misunderstanding of the horse as an animal.
I have also seen horses whipped and slapped and kicked by people who have been more concerned about their own feelings and self image, than by any feelings for their horse.
That sort of aggression can only result in a horse who responds to the handler/rider through fear, resulting in a very different animal than one which has been trained/worked using non aggressive methods.
The use/non use of aggression depends on the individual, not on the method employed/favoured.
There is, however, a difference between aggression and confrontation.
Kate F's example of the potentially dangerous stallion required steadfast confrontation in the interests of the safety of the handler/trainer, but only in so far as to persuade the stallion to desist from his attemps to intimidate the handler.........anything further than that end would have been an aggressive act and, therefor, abusive.
Stallions would tend to exhibit that behaviour through their desire to dominate, but mares and geldings can be equally dangerous through fear if aggression is used toward them, particularly where they have been treated aggressively previously.
I always suggest to my clients that they adopt the following rules when training/handling their horses:
1. Don't use the voice to chastise.......I believe the use of harsh tones upsets horses, and can do damage similar to a physical reprimand.
2. Use the halter ('Be-Nice' in my case) to silently correct the horse in the event that it has got something wrong (even in the case of a horse which is acting dangerously).........any voice aid used with the halter is not only unnecessary, but will allow the horse to connect you with the halter correction.
To be effective the halter correction must be considered by the horse to be remote from the handler, so that the praise for the correct response after the correction can be the more appreciated by the horse.
3. Give voice praise immediately the horse gives the correct response (any passive response initially) so that he may make the connection between his try and a good response from you.
4. If you find yourself losing composure and patience, find a good point to finish and start again another day.
Once a handler/trainer is in that mindset and way of working, it is less likely that they will lose control of themselves and act offensively toward the horse, thus reducing the chance that their first reaction will be an aggressive one.
A good horse trainer must have control of him/herself if they are to achieve control of their horse.
Anyone who is guilty of aggression toward horses should perhaps consider snails as pets.