
Vigilantism is the act of preventing, investigating, and punishing perceived offences and crimes without legal authority. While the laws of self-defence vary across Australia, most laws require that the person believed on reasonable grounds that it was necessary in self-defence to do what they did. In the context of policing, vigilantism is considered a form of exit and is generally illegal. In Australia, there is a fine line between self-help and vigilantism, with police advising against keeping weapons for protection and encouraging immediate contact with the police in the case of a home invasion. However, two states, South Australia and Western Australia, have laws that specifically address self-defence during home invasions, allowing occupants to defend themselves, others, and their property.
| Characteristics | Values |
|---|---|
| Definition | The act of preventing, investigating, and punishing perceived offenses and crimes without legal authority |
| Nature | Illegal |
| Type | Extralegal |
| Actions | Prevention, investigation, punishment |
| Response to | Perceived crime or violation of an authoritative norm |
| Example | Posting about crimes in one's neighbourhood on social media |
| Risks | Being charged with stalking, using the internet to harass, defamation |
| Australia's Approach | Discourages vigilantism and emphasizes reasonable necessity in self-defence |
| Citizen's Arrest | Allowed in most states and territories |
| Use of Force | Limited to "reasonable force" which is not disproportionate to the purpose of the arrest |
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What You'll Learn

Vigilantism is acting without legal authority
Vigilantism is a response to a perceived crime or violation of an authoritative norm. It involves taking matters into one's own hands and acting without legal authority to prevent, investigate, or punish perceived offences and crimes. In Australia, vigilantism is discouraged, and while there is no specific offence called "home invasion", the relevant offending is usually prosecuted through offences including robbery, break and enter with intent, burglary, and assault.
Vigilantism is often associated with physical acts of violence or punishment, such as beating up or killing perceived offenders. However, in the digital age, a new form of vigilantism has emerged: digital vigilantism or internet vigilantism. This involves using the internet and social media to identify and publicly shame alleged criminals, often by posting images and videos caught on CCTV. While it may not be illegal to post about crimes on social media, legal experts warn that it is a risky business. There are risks of being charged with stalking, using the internet to harass, and defamation.
Australian laws on self-defence empower members of the community to make a citizen's arrest, allowing a person to apprehend an intruder unlawfully inside their house and deliver them to the police. However, the use of force must be reasonable and not disproportionate to the purpose of the arrest. Encouraging citizens to rely on legal authorities rather than taking matters into their own hands, the police advise Australian homeowners against keeping weapons for protection and instruct them to contact the police if they suspect an intruder.
Vigilantism can pose challenges to public management and have substantial consequences. It can reduce citizens' readiness to comply with the authorities and damage their view of the authorities' legitimacy. Therefore, while it may be tempting for citizens to take matters into their own hands, vigilantism is discouraged in favour of legal and authorised responses to crime.
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Citizen's arrest in Australia
Vigilantism is the act of preventing, investigating, and punishing perceived offences and crimes without legal authority. Citizens' arrests are a form of vigilantism that is legally recognised in Australia. Each Australian state has legislation allowing for citizens' arrests if necessary.
In Victoria, the rules for citizens' arrests are set out in the Crimes Act 1958, but similar provisions exist in all other Australian jurisdictions. A person may arrest someone if they reasonably believe a crime is being committed or is about to be committed. The person making the arrest must communicate to the individual what they are being arrested for. They must also only use a reasonable degree of force necessary to carry out the arrest.
There are risks associated with citizens' arrests. The person being arrested could be unintentionally harmed if too much force is used. There is also the risk of being assaulted by the person being arrested. Legal experts advise against making citizens' arrests, especially of minors, as the situation could escalate.
If a citizen's arrest is carried out without the power to do so, this amounts to false imprisonment, and the person arrested may take civil or criminal action against the arrestor.
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Vigilantism and self-defence
Vigilantism is the act of preventing, investigating, and punishing perceived offences and crimes without legal authority. It is an illegal behaviour that can pose challenges to public management and have negative consequences. In the context of policing, vigilantism is considered a private citizen's response to criminal activity by another private citizen, which involves taking the law into their own hands.
In Australia, the line between self-help and vigilantism is carefully drawn, especially in the context of home invasions. While there is no specific offence of "home invasion" in Australia, relevant offences such as robbery, break and enter with intent, and assault are prosecuted. South Australia and Western Australia have laws specifically addressing self-defence during home invasions, allowing occupants to defend themselves, others, or their property. However, the use of force must be reasonable and not disproportionate to the purpose of the arrest.
Australian states and territories emphasise reasonable necessity in self-defence laws to discourage vigilantism. Citizens are advised against keeping weapons for protection and are encouraged to contact the police if they suspect an intruder. While citizens' arrests are permitted, the person making the arrest must act genuinely and reasonably.
Digital vigilantism, such as posting about crimes on social media or identifying alleged criminals online, is also risky. While it may not be illegal to post about crimes, legal experts warn that incorrectly identifying someone as a criminal can lead to charges of stalking, harassment, or defamation. It is important for citizens to be cautious and not take the law into their own hands.
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Digital vigilantism and defamation
Vigilantism is the act of preventing, investigating, and punishing perceived offences and crimes without legal authority. Internet vigilantism, also known as digital vigilantism, is the act of carrying out such vigilante activities through the internet. This may include activities such as hacking, baiting, and public shaming.
Digital vigilantism can be seen as a form of cyberbullying, as both involve public shaming and the publishing of private information. However, cyberbullying is typically driven by the bully's ability to get away with harassment rather than a desire for social change. Digital vigilantism can also overlap with digital activism, as the awareness of a social issue may increase due to the dissemination of information associated with digital vigilante tactics.
Digital vigilantism can have negative consequences, such as the loss of digital evidence, which can obstruct legitimate criminal investigations. It can also lead to the shaming and discrimination of targeted individuals, reproducing categorical forms of discrimination. The terms of appropriate use are often unclear, and public discourse may vary based on the severity of the offence, the severity of the response, and the identities and affiliations of those involved.
In some cases, digital vigilantism may be legally protected, such as when it falls under laws relating to the protection of others. Additionally, there have been instances where digital vigilantes have cooperated with criminal justice investigations, such as in the cases of BrickerBot and WannaCry ransomware attacks.
In conclusion, digital vigilantism is a complex phenomenon that can have both positive and negative impacts. While it may be seen as a form of civic engagement and a means of seeking justice, it can also lead to negative consequences such as cyberbullying, loss of evidence, and discrimination. The legality and appropriateness of digital vigilantism depend on the specific context and the severity of the offence and response.
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Vigilantism as a response to unsatisfactory encounters with bureaucrats
Vigilantism is the act of preventing, investigating, and punishing perceived offences and crimes without legal authority. It is an illegal behaviour that poses challenges to public management and bureaucratic agencies, particularly law enforcement systems. When citizens have unsatisfactory encounters with street-level bureaucrats (SLBs), they may be prompted to take the law into their own hands and engage in vigilante actions.
The literature on public management acknowledges the impact of street-level encounters on citizens' lives and prospects. However, there is a lack of understanding about what happens between these encounters and how citizens react. Unsatisfactory encounters with SLBs can lead to unfavourable outcomes for citizens, influencing their tendency to resort to vigilantism. This behaviour can manifest in various forms, ranging from violent attacks to capturing and claiming to punish perceived offenders, as seen in the examples of Jonathan Idema in Afghanistan and the Revolutionary Front in Sweden.
Procedural justice plays a crucial role in citizens' decisions to act as vigilantes. Three significant factors have been identified in this context: the ability of citizens to voice their complaints, the sense that they were treated respectfully, and their trust in the police to address their concerns. When these factors are perceived as lacking, citizens may feel motivated to take matters into their own hands.
Research has also explored the relationship between the discretion and work routines of SLBs and the perceptions and behaviours of citizens. By understanding the process citizens go through when interacting with SLBs, we can gain insights into the factors that contribute to vigilantism. This includes granting individuals a voice in decision-making processes, ensuring neutrality and transparency in resource allocation, and treating individuals with respect and courtesy.
In summary, unsatisfactory encounters with bureaucrats can lead to vigilantism as citizens feel compelled to take matters into their own hands when they perceive a lack of justice or effective resolution through official channels. However, vigilantism is illegal and poses challenges to the state's monopoly on the use of power and the rule of law.
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Frequently asked questions
Vigilantism is the act of preventing, investigating, and punishing perceived offences and crimes without legal authority.
Although there is no federal law against vigilantism in Australia, it is generally discouraged. Vigilantism is considered an illegal activity carried out by a private citizen in response to criminal activity.
The laws of self-defence vary across Australia, but most laws require that the person believed on reasonable grounds that it was necessary to act in self-defence. South Australia and Western Australia have laws that specifically address self-defence during a home invasion, relaxing the requirements of proportionality in the homeowner's response.
Digital vigilantism refers to identifying alleged criminals online. The risks include being charged with stalking, using the internet to harass, and defamation.












