Section 1 of the Canadian Charter of Rights and Freedoms is the section that confirms that the rights listed in the Charter are guaranteed. The section is also known as the reasonable limits clause or limitations clause, as it legally allows the government to limit an individual's Charter rights. This limitation on rights has been used in the last twenty years to prevent a variety of objectionable conduct such as child pornography (e.g., in R v Sharpe), hate speech (e.g., in R v Keegstra), and obscenity (e.g., in R v Butler).