Open main menu

This telescopic steel security baton is sold to the public in Japan (2009).

Self-defense (self-defence in some varieties of English) is a countermeasure that involves defending the health and well-being of oneself from harm.[1] The use of the right of self-defense as a legal justification for the use of force in times of danger is available in many jurisdictions.[2]


Demonstration of a Ju-Jitsu defense against a knife attack. Berlin 1924

Physical self-defense is the use of physical force to counter an immediate threat of violence. Such force can be either armed or unarmed. In either case, the chances of success depend on various parameters, related to the severity of the threat on one hand, but also on the mental and physical preparedness of the defender.


Many styles of martial arts are practiced for self-defense or include self-defense techniques. Some styles train primarily for self-defense, while other martial or combat sports can be effectively applied for self-defense. Some martial arts train how to escape from a knife or gun situation, or how to break away from a punch, while others train how to attack. To provide more practical self-defense, many modern martial arts schools now use a combination of martial arts styles and techniques, and will often customize self-defense training to suit individual participants.


A wide variety of weapons can be used for self-defense. The most suitable depends on the threat presented, the victim or victims, and the experience of the defender. Legal restrictions also greatly influence self-defense options.

In many cases there are also legal restrictions. While in some jurisdictions firearms may be carried openly or concealed expressly for this purpose, many jurisdictions have tight restrictions on who can own firearms, and what types they can own. Knives, especially those categorized as switchblades may also be controlled, as may batons, pepper spray and personal stun guns and Tasers - although some may be legal to carry with a license or for certain professions.

Non-injurious water-based self-defense indelible dye-marker sprays, or ID-marker or DNA-marker sprays linking a suspect to a crime scene, would in most places be legal to own and carry.[3]

Everyday objects, such as flashlights, baseball bats, newspapers, keyrings with keys, kitchen utensils and other tools, and hair spray aerosol cans in combination with a lighter, can also be used as improvised weapons for self-defense.

Other formsEdit

Verbal self-defense is defined as using words "to prevent, de-escalate, or end an attempted assault."[4]

Self-defense educationEdit

Self-defense techniques and recommended behavior under the threat of violence is systematically taught in self-defense classes. Commercial self-defense education is part of the martial arts industry in the wider sense, and many martial arts instructors also give self-defense classes. While all martial arts training can be argued to have some self-defense applications, self-defense courses are marketed explicitly as being oriented towards effectiveness and optimized towards situations as they occur in the real world. Many systems are taught commercially, many tailored to the needs of specific target audiences (e.g. defense against attempted rape for women, self-defense for children and teens). Keeping people safe should be foremost in every self defense curriculum. The best advice any self-defense instructor can give is this; "If you're being robbed, the safest thing to do is to give the perpetrator what they want and let them be on their way. There's nothing in your wallet worth dying for".Defending weapon attacks Notable systems taught commercially include:

Legal aspectsEdit

Application of the lawEdit

In any given case, it can be difficult to evaluate whether force was excessive. Allowances for great force may be hard to reconcile with human rights.

The Intermediate People's Court of Foshan, People's Republic of China in a 2009 case ruled the killing of a robber during his escape attempt to be justifiable self-defense because "the robbery was still in progress" at this time.[5]

In the United States between 2008 and 2012, approximately 1 out of every 38 gun-related deaths (which includes murders, suicides, and accidental deaths) was a justifiable killing, according to the Violence Policy Center.[6]

See alsoEdit


  1. ^'s Definition of "Self-Defense". Retrieved on 2012-06-02.
  2. ^ Kopel, David B.; Gallant, Paul; Eisen, Joanne D. (2008). "The Human Right of Self-Defense" (PDF). BYU Journal of Public Law. BYU Law School. 22: 43–178.
  3. ^ Branded a criminal - Red Offender spray is rolled out at Canterbury's nightspots (, 13 May 2010). Retrieved on 2012-08-05.
  4. ^ Mattingly, Katy (July 2007). Self-defense: steps to surviva. Human Kinetics. p. 2. ISBN 978-0-7360-6689-1. Retrieved 28 July 2010.
  5. ^ Are There Limits to Self-Defense? Beijing Review, 28 April 2009.
  6. ^ Martelle, Scott (19 June 2015). "Gun and self-defense statistics that might surprise you -- and the NRA". Los Angeles Times. Retrieved 16 February 2018.

External linksEdit