I've got a question that is slightly on topic... I've been doing kickboxing for a short while now, and will be doing it for the next 2 years or so, and my instructor went through a few things that we could use on the 'street' as he put it - if we were attacked.
Now these things were brutal, and I cant help but think if you did anything like this you'd be taking the 'self defence' term towards more like 'mortal kombat' terms. I'm talking about dropping knees on peoples faces, choking them to the ground and kicking them in the face with your shin.. and things like taking them down from behind and elbowing them in the face whilst they're down.
Surely the police would view this as a slightly over the top use of self defence?
You're absolutely correct.
This is the problem with many 'martial arts' academies, they are run by instructors who have no concept of how to transfer skills from the ring, outside to the real world where there are laws and morals - they also have egos bigger than their training halls.
You have to gauge exactly how much force you should use in a given situation. For example somebody drunk on a night out giving you stick can easily be rectified by verbal methods. Compliance and diffusing the situation verbally is one of THE most important ways to defend youself.
If you do have to turn physical, then you need to consider a number of factors. Is it even worth fighting? If they have a knife and want your wallet, then give it to them. Even Bruce Lee would have struggled to defend himself confidently against a knife in a real situation.
If your instructor is telling you to shin strike to the face as self defence, then take anything else he says with a very large fist full of salt.
Kicking anywhere above waist height is asking for trouble, kicking to the face outside of the training hall is too easy to mess up. I speak from personal experience and also from stories of training buddies.
Weapons to use on the street: Open hands, fists, elbows, knees, shins, feet.
In a life or death situation - forget all of that and do anything.