An ex post facto law is a law that retroactively changes the legal consequences of actions that were committed, or relationships that existed, before the enactment of the law. In criminal law, it may criminalize actions that were legal when committed; it may aggravate a crime by bringing it into a more severe category than it was in when it was committed; it may change the punishment prescribed for a crime, as by adding new penalties or extending sentences; or it may alter the rules of evidence in order to make conviction for a crime likelier than it would have been when the deed was committed.
Section 7 of the Canadian Charter of Rights and Freedoms is a constitutional provision that protects an individual's autonomy and personal legal rights from actions of the government in Canada. There are three types of protection within the section: the right to life, liberty and security of the person. Denials of these rights are constitutional only if the denials do not breach what is referred to as fundamental justice.
R v Vaillancourt, [1987] 2 S.C.R. 636, is a landmark case from the Supreme Court of Canada on the constitutionality of the Criminal Code concept of "constructive murder". The Court raised the possibility that crimes with significant "stigma" attached, such as murder, require proof of the mens rea element of subjective foresight of death, but declined to decide on that basis. Instead, they concluded that all crimes require proof of at least objective fault, that the particular provision at issue here did not meet that requirement, and therefore that provision of the Criminal Code for constructive murder was unconstitutional.
Canadian Foundation for Children, Youth and the Law v Canada (AG), [2004] 1 S.C.R. 76, 2004 SCC 4 – known also as the spanking case – is a leading Charter decision of the Supreme Court of Canada where the Court upheld section 43 of the Criminal Code that allowed for a defence of reasonable use of force by way of correction towards children as not in violation of section 7, section 12 or section 15(1) of the Charter.
Section 11 of the Canadian Charter of Rights and Freedoms is the section of the Canadian Constitution that protects a person's legal rights in criminal and penal matters. There are nine enumerated rights protected in section 11.
R v Zundel [1992] 2 S.C.R. 731 is a landmark Supreme Court of Canada decision where the Court struck down the provision in the Criminal Code that prohibited publication of false information or news on the basis that it violated the freedom of expression provision under section 2(b) of the Canadian Charter of Rights and Freedoms.
R v Keegstra, [1990] 3 SCR 697 is a freedom of expression decision of the Supreme Court of Canada where the court upheld the Criminal Code provision prohibiting the wilful promotion of hatred against an identifiable group as constitutional under the freedom of expression provision in section 2(b) of the Canadian Charter of Rights and Freedoms. It is a companion case to R v Andrews.
R v Swain, [1991] 1 S.C.R. 933 is a leading constitutional decision of the Supreme Court of Canada on certain rights of the mentally ill in their criminal defence. The case concerned a constitutional challenge of the common law rule permitting the Crown to adduce evidence of an accused's insanity and section 542(2) of the Criminal Code, which allowed for the indeterminate detention of an accused who is found not guilty by reason of "insanity". The Court held that both the common law rule and the Code provision were unconstitutional. As a result, the Court created a new common law rule that was constitutional, and Parliament created new laws of what to do with individuals who were found not criminally responsible by reason of a mental disorder. The parties to the case were the appellant, Swain, the respondent, the Crown, and the following interveners: the Attorney General of Canada, the Lieutenant Governor's Board of Review of Ontario, the Canadian Disability Rights Council, the Canadian Mental Health Association, and the Canadian Association for Community Living.
R v Seaboyer, [1991] 2 S.C.R. 577 is a leading Supreme Court of Canada decision where the Court struck-down a rape-shield provision of the Criminal Code as it violated the right to "full answer and defence" under sections 7 and 11(d) of the Canadian Charter of Rights and Freedoms. The case was decided with R v Gayme.
R v Lucas is the leading Supreme Court of Canada decision on the criminal offence of defamatory libel. The Court held that the Criminal Code offence of defamatory libel infringed the constitutional protection of freedom of expression under Section 2(b) of the Canadian Charter of Rights and Freedoms, but the offence was a reasonable limit prescribed by law under Section 1 of the Charter.
R v Mills, [1999] 3 S.C.R. 668 is a leading Supreme Court of Canada decision where the Court upheld the newly enacted rape shield law when challenged as a violation to section 7 and 11(d) of the Canadian Charter of Rights and Freedoms. The rape shield law was the second of its type, the first having been struck down in R. v. Seaboyer. Accordingly, this case is often cited as an example of judicial dialogue.
Winko v British Columbia , [1999] 2 S.C.R. 625 is a Supreme Court of Canada decision on constitutionality of the mental health laws in the Criminal Code under section 7 and section 15 of the Canadian Charter of Rights and Freedoms.
Canada v Schmidt, [1987] 1 S.C.R. 500, is a decision by the Supreme Court of Canada on the applicability of fundamental justice under the Canadian Charter of Rights and Freedoms on extradition. While fundamental justice in Canada included a variety of legal protections, the Court found that in considering the punishments one might face when extradited to another country, only those that "shock the conscience" would breach fundamental justice.
R v Hess; R v Nguyen, [1990] 2 S.C.R. 906 is a decision of the Supreme Court of Canada where the Court struck down part of the Criminal Code offence of rape as a violation of section 7 of the Canadian Charter of Rights and Freedoms.
R v Morales, [1992] 3 S.C.R. 711, is a case decided by the Supreme Court of Canada. The Court found that the "public interest" basis for pre-trial detention under section 515 of the Criminal Code violated section 11(e) of the Canadian Charter of Rights and Freedoms, the right not to be denied reasonable bail, as it authorized detention on vague and imprecise grounds, and could not be saved by section 1.
R v DB, 2008 SCC 25 is a landmark decision of the Supreme Court of Canada on youth justice and sentencing. The Court held the provisions of the Youth Criminal Justice Act that required presumptive adult sentences for youth convicted of certain offences to be unconstitutional. Ruling that the presumption of diminished moral blameworthiness for young persons was a principle of fundamental justice under section 7 of the Charter of Rights and Freedoms, and that the impugned provisions unconstitutionally deprived them of their liberty by presuming their moral blameworthiness to be equivalent to adults.
Hate speech laws in Canada include provisions in the federal Criminal Code, as well as statutory provisions relating to hate publications in three provinces and one territory.
The passage of the Canadian Charter of Rights and Freedoms in 1982 allowed for the provision of challenging the constitutionality of laws governing prostitution law in Canada in addition to interpretative case law. Other legal proceedings have dealt with ultra vires issues. In 2013, three provisions of the current law were overturned by the Supreme Court of Canada, with a twelve-month stay of effect. In June 2014, the Government introduced amending legislation in response.
R v Nur, 2015 SCC 15, is a Canadian constitutional law case concerning the constitutionality of mandatory minimum sentences for firearm offences in Canada.
R v Brown, 2022 SCC 18, is a decision of the Supreme Court of Canada on the constitutionality of section 33.1 of the Criminal Code, which prohibited an accused from raising self-induced intoxication as a defence to criminal charges. The Court unanimously held that the section violated the Charter of Rights and Freedoms and struck it down as unconstitutional. The Court delivered the Brown decision alongside the decision for its companion case R v Sullivan.
