Kara Sears
In the United States, the law recognizes an individual's right to defend themselves, their family, and their property when faced with an immediate threat. This legal right enables a person to use reasonable force to prevent harm, provided the circumstances justify such actions. The use of force is justified when an individual reasonably believes that they are in imminent danger of bodily harm. However, it is important to note that self-defense is about the prevention of harm, not retaliation. The force used in self-defense must be proportional to the threat and only when necessary. Additionally, there is generally no duty to retreat in most states, but this varies depending on the situation and the state, as some states have a stand your ground law.
| Characteristics | Values |
|---|---|
| Self-defence | You have the legal right to use force to protect yourself against physical violence if you reasonably believe someone poses an imminent threat of bodily harm to you |
| You cannot be the aggressor and must not have provoked the attack | |
| You must be lawfully present where you are | |
| Your response must be proportional to the threat | |
| You must only use force when necessary | |
| Castle doctrine | You may use deadly force to protect yourself or prevent a felony in your home, vehicle, or workplace without a legal obligation to retreat |
| Stand-your-ground laws | You can legally respond to an immediate threat of death or serious physical injury with lethal force, regardless of where you are, without having to retreat |
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What You'll Learn
The right to self-defence
In the United States, the right to self-defence is recognised, but it is not a blanket permission to use any level of force against any threat. The force used in self-defence must be "reasonable in the circumstances", as determined by a jury. This includes considering factors such as the person's role in the incident and the surrounding circumstances. Additionally, in many states, there is a "duty to retreat" before using deadly force, or any force at all. This means that if someone can safely avoid the risk of harm by retreating, they are legally obligated to do so. However, there are exceptions to this duty, such as the "castle doctrine", which allows the use of deadly force to protect oneself or prevent a felony in one's home, workplace, or occupied vehicle.
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The 'duty to retreat'
Stand-your-ground laws are another exception to the duty to retreat. These laws allow a person to use force to defend themselves without first attempting to retreat from the danger. Stand-your-ground laws are a point of contention, with critics arguing that they encourage gun violence and violent crime. Supporters, on the other hand, argue that they are necessary for defending against would-be perpetrators.
It is important to note that the use of force in self-defence must be proportional to the threat and that self-defence is about the prevention of harm, not retaliation. If a person can safely retreat from a dangerous situation, they have a legal obligation to do so. However, if retreating is not a safe option, a person may use force to defend themselves without facing criminal charges for any harm they cause their aggressor.
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The 'castle doctrine'
The castle doctrine, also known as castle law or defence of habitation law, is a legal doctrine that designates a person's abode or any legally occupied place (e.g. an automobile or a home) as a place where that person has protections and immunities to use force to defend oneself against an intruder, without fear of legal prosecution for the consequences of the force used. The doctrine is most commonly used in the United States, although many other countries invoke comparable principles in their laws.
The castle doctrine lessens the duty to retreat when an individual is assaulted within their own home. In many states, you have a "duty to retreat" before you can use deadly force (and in some states, any force). If you can safely avoid the risk of serious bodily injury by retreating, you are legally obliged to do so. However, if you are attacked in your home, you may use deadly force to protect yourself or prevent a felony, without having to retreat.
The castle doctrine originates from English common law, which was imported to the US by colonists. The term has been used in England to imply a person's absolute right to exclude anyone from their home, although this has always had restrictions, such as bailiffs' powers of entry. According to 18th-century biblical commentator Matthew Henry, the Old Testament's prohibition of murder contains an exception for legitimate self-defence.
The castle doctrine has been controversial in the US in relation to a number of cases, including the death of Japanese exchange student Yoshihiro Hattori.
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'Stand your ground' laws
Stand-your-ground laws, sometimes called "line in the sand" or "no duty to retreat" laws, provide that people may use deadly force when they reasonably believe it to be necessary to defend against certain violent crimes, under the right of self-defence. In other words, people have no duty to retreat before using deadly force in self-defence, as long as they are in a place where they are lawfully present. This law applies to any kind of threat by an attacker that endangers the victim's safety, health, or life.
In many states, there is a duty to retreat before using deadly force, meaning that if one can safely avoid the risk of serious bodily injury by retreating, one is legally obligated to do so. This is to ensure that the decision of using deadly force is left to law enforcement. An exception to the "duty to retreat" is if you are attacked in your home, which some states extend to the workplace or an occupied vehicle, under what is called the castle doctrine.
A slight majority of states go further than the castle doctrine, allowing citizens to legally respond to an immediate threat of death or serious physical injury with lethal force, regardless of where they are, without having to retreat. These are known as stand-your-ground states. Examples include Alabama, Alaska, Arizona, Arkansas, Florida, Georgia, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Missouri, Montana, Nevada, New Hampshire, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, West Virginia, and Wyoming. Puerto Rico is also a stand-your-ground territory.
It is important to note that, while there may be no duty to retreat, one must still have a legal right to be present, and the force used must be proportional to the threat faced. If one uses too much force, one can face misdemeanour or even felony murder or assault charges under their state's criminal law.
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Proportionality of force
The proportionality of force is a key principle in determining whether an attack is lawful. This principle dictates that the force used in self-defence must be proportional to the threat faced. In other words, the response to an attack must reflect the scope, nature, and gravity of the attack itself. This is a subjective assessment that takes into account the circumstances and attributes of those involved.
For instance, a 120-pound person may be justified in using a weapon to defend themselves against an unarmed but physically dominating attacker. On the other hand, a skilled martial artist might face greater scrutiny if they used deadly force against an untrained aggressor of similar size.
Stand Your Ground laws, which have been enacted in several states, including Alabama, Alaska, Arizona, Florida, Georgia, Indiana, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Montana, Nevada, New Hampshire, North Carolina, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, and West Virginia, allow individuals to defend themselves, their family, property, or home without having to first retreat. However, these laws have been controversial, as they have been interpreted to permit the use of lethal force in response to non-lethal threats.
In contrast, in duty to retreat states, individuals must attempt to evade their attacker if possible, and lethal force is considered a last resort.
Ultimately, the determination of whether the use of force is proportional and, therefore, lawful is made by a police officer, prosecutor, judge, and, in some cases, a jury.
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Frequently asked questions
No, you cannot claim self-defence if you are the aggressor in the situation.
In many states, you have a "duty to retreat" before using any force. However, there is no duty to retreat if you are in a place where you have a legal right to be, and you can use reasonable force to defend yourself.
No, you cannot use deadly force to protect property. However, you can use reasonable, non-deadly force to protect your property.
Yes, if a police officer is using excessive force to arrest you, you are justified in using reasonable force to defend yourself, but only to the extent that you reasonably believe such force is necessary.
Yes, you can use deadly force if you reasonably believe that such force is necessary to prevent imminent death or great bodily harm to yourself or another person.
