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Beyond (a) reasonable doubt is a legal standard of proof required to validate a criminal conviction in most adversarial legal systems. [1] It is a higher standard of proof than the standard of balance of probabilities (US English: preponderance of the evidence) commonly used in civil cases because the stakes are much higher in a criminal case: a person found guilty can be deprived of liberty ...
For example, the presumption of innocence in a criminal case places a legal burden upon the prosecution to prove all elements of the offense (generally beyond a reasonable doubt), and to disprove all the defenses except for affirmative defenses in which the proof of non-existence of all affirmative defense(s) is not constitutionally required of ...
R v Lifchus, [1997] 3 SCR 320 is a leading Supreme Court of Canada decision on the legal basis of the "beyond a reasonable doubt" standard for criminal law.Cory J outlined several core principles of the reasonable doubt standard and provided a list of points that must be explained to a jury when they are to consider the standard.
In most common law jurisdictions, an element of a crime is one of a set of facts that must all be proven to convict a defendant of a crime. Before a court finds a defendant guilty of a criminal offense, the prosecution must present evidence that, even when opposed by any evidence the defense may choose, is credible and sufficient to prove beyond a reasonable doubt that the defendant committed ...
Blackstone's principle influenced the nineteenth-century development of "beyond a reasonable doubt" as the burden of proof in criminal law. [22] Many commentators suggest that Blackstone's ratio determines the confidence interval of the burden of proof; for example Jack B. Weinstein wrote: [23]
Mens rea is an element of the offence that the prosecution needs to assert beyond a reasonable doubt for the accused to be found fully liable of the offence, assuming the offence is one that requires an element of mens rea (see, He Kaw Teh v R - case from the Australian High Court regarding importance of establishment of the element of mens rea).
In this respect, affirmative defenses differ from ordinary defenses [claim of right, alibi, infancy, necessity, and self-defense (which is an affirmative defense at common law)], which the prosecution has the burden of disproving beyond a reasonable doubt.
However, in the event that a body is not present or has not yet been discovered, it is possible to prove a crime took place if sufficient circumstantial evidence is presented to prove the matter beyond a reasonable doubt. [2] For example, the presence at a missing person's home of spilled human blood, identifiable as that person's, in ...