Surely to be aware and avoid potentially violent situations has got to be better than trying to fight your way out of problems.
I accept that if things go drastically wrong then there is a need to know how to defend yourself - However the clever operator avoids the need to fight by recognising the potential violent situation before it arises.
Government and Military operators are very skilled in this. The last thing they would want is a confrontation.
Perhaps more martial art practitioners should learn the reading of body language,communication models and the skill of recognising and avoidinging danger.
As I have always said "It is better to have avoided the situation than it is to appear in a criminal court later to justify your actions".
A complete martial art/defence system should include all skills.
Stephen Sweetlove