In United States criminal law, probable cause is the standard by which police authorities have reason to obtain a warrant for the arrest of a suspected criminal or the issuing of a search warrant. There is no universally accepted definition or formulation for probable cause. One traditional definition, which comes from the U.S. Supreme Court's 1964 decision Beck v. Ohio, is when "whether at [the moment of arrest] the facts and circumstances within [an officer's] knowledge and of which they had reasonably trustworthy information [are] sufficient to warrant a prudent [person] in believing that [a suspect] had committed or was committing an offense."
The defence of property is a common method of justification used by defendants who argue that they should not be held liable for any loss and injury that they have caused because they were acting to protect their property.
A citizen's arrest is an arrest made by a private citizen – that is, a person who is not acting as a sworn law-enforcement official. In common law jurisdictions, the practice dates back to medieval England and the English common law, in which sheriffs encouraged ordinary citizens to help apprehend law breakers.
The presumption of innocence is a legal principle that every person accused of any crime is considered innocent until proven guilty. Under the presumption of innocence, the legal burden of proof is thus on the prosecution, which must present compelling evidence to the trier of fact. If the prosecution does not prove the charges true, then the person is acquitted of the charges. The prosecution must in most cases prove that the accused is guilty beyond a reasonable doubt. If reasonable doubt remains, the accused must be acquitted. The opposite system is a presumption of guilt.
The concept of justifiable homicide in criminal law is a defense to culpable homicide. Generally, there is a burden to produce exculpatory evidence in the legal defense of justification.
False arrest, unlawful arrest or wrongful arrest is a common law tort, where a plaintiff alleges they were held in custody without probable cause, or without an order issued by a court of competent jurisdiction. Although it is possible to sue law enforcement officials for false arrest, the usual defendants in such cases are private security firms.
The Police and Criminal Evidence Act 1984 (PACE) is an Act of Parliament which instituted a legislative framework for the powers of police officers in England and Wales to combat crime, and provided codes of practice for the exercise of those powers. Part VI of PACE required the Home Secretary to issue Codes of Practice governing police powers. The aim of PACE is to establish a balance between the powers of the police in England and Wales and the rights and freedoms of the public. Equivalent provision is made for Northern Ireland by the Police and Criminal Evidence Order 1989 (SI 1989/1341). The equivalent in Scots Law is the Criminal Procedure (Scotland) Act 1995.
The criminal law of Canada is under the exclusive legislative jurisdiction of the Parliament of Canada. The power to enact criminal law is derived from section 91(27) of the Constitution Act, 1867. Most criminal laws have been codified in the Criminal Code, as well as the Controlled Drugs and Substances Act, Youth Criminal Justice Act and several other peripheral statutes.
Self-defence is a defence permitting reasonable force to be used to defend one's self or another. This defence arises both from common law and the Criminal Law Act 1967. Self-defence is a justification defence rather than an excuse.
The right to silence in England and Wales is the protection given to a person during criminal proceedings from adverse consequences of remaining silent. It is sometimes referred to as the privilege against self-incrimination. It is used on any occasion when it is considered the person being spoken to is under suspicion of having committed one or more criminal offences and consequently thus potentially being subject to criminal proceedings.
National Coalition for Gay and Lesbian Equality and Another v Minister of Justice and Others is a decision of the Constitutional Court of South Africa which struck down the laws prohibiting consensual sexual activities between men. Basing its decision on the Bill of Rights in the Constitution – and in particular its explicit prohibition of discrimination based on sexual orientation – the court unanimously ruled that the crime of sodomy, as well as various other related provisions of the criminal law, were unconstitutional and therefore invalid.
The Penal Law of the State of New York combines justification and necessity into a single article, Article 35. "Defense of Justification" comprises sections 35.05 through 35.30 of the Penal Law. The general provision relating to necessity, section 35.05, provides:
§ 35.05 Justification; generally.
Unless otherwise limited by the ensuing provisions of this article defining justifiable use of physical force, conduct which would otherwise constitute an offense is justifiable and not criminal when:
The powers of the police in Scotland, as with much of Scots law, are based on mixed elements of statute law and common law.
The powers of the police in England and Wales are defined largely by statute law, with the main sources of power being the Police and Criminal Evidence Act 1984 and the Police Act 1996. This article covers the powers of police officers of territorial police forces only, but a police officer in one of the UK's special police forces can utilise extended jurisdiction powers outside of their normal jurisdiction in certain defined situations as set out in statute. In law, police powers are given to constables. All police officers in England and Wales are "constables" in law whatever their rank. Certain police powers are also available to a limited extent to police community support officers and other non warranted positions such as police civilian investigators or designated detention officers employed by some police forces even though they are not constables.
Investigating Directorate: Serious Economic Offences and Others v Hyundai Motor Distributors (Pty) Ltd and Others; In Re Hyundai Motor Distributors (Pty) Ltd and Others v Smit NO and Others, an important case in South African law, was heard in the Constitutional Court on March 16, 2000, with judgment handed down on August 25. Chaskalson P, Langa DP, Goldstone J, Kriegler J, Madala J, Mokgoro J, Ngcobo J, O'Regan J, Sachs J, Yacoob J and Cameron AJ were the judges.
South African criminal law is the body of national law relating to crime in South Africa. In the definition of Van der Walt et al., a crime is "conduct which common or statute law prohibits and expressly or impliedly subjects to punishment remissible by the state alone and which the offender cannot avoid by his own act once he has been convicted." Crime involves the infliction of harm against society. The function or object of criminal law is to provide a social mechanism with which to coerce members of society to abstain from conduct that is harmful to the interests of society.
Criminal procedure in South Africa refers to the adjudication process of that country's criminal law. It forms part of procedural or adjectival law, and describes the means by which its substantive counterpart, South African criminal law, is applied. It has its basis mainly in English law.
In Investigating Directorate: Serious Economic Offences and Others v Hyundai 2001 (1) SA 545 (CC), an important case in South African criminal procedure, a search warrant had been issued in terms of section 29 of the National Prosecuting Authority Act in respect of certain premises. A large quantity of documents, records and data had been seized from those premises.
Use-of-force law in Missouri refers to the law & legal doctrine which determine whether a member of law enforcement in the state of Missouri is justified in the amount of force used to gain control of an unruly situation or person, including situations involving death. In the United States, doctrine about use of force is primarily defined by the individual states, although there have been some Supreme Court decisions of limited scope.
In Australian criminal law, reasonable and probable grounds most prominently regulates police officers as a precondition of the exercise of certain powers in their function as enforcers of the law. Based on Australian common law, it is a prerequisite of most police powers. In Canada, it is defined as the point where probability replaces suspicion based on a reasonable belief; reasonableness is a legitimate expectation in the existence of specific facts, and the belief in individual circumstances can be "reasonable without being probable." Less-clearly defined in Australia, it depends on the circumstances of a case and often involves an assessment of the circumstances of a potential crime.
