The Islamic Republic of Iran is an authoritarian theocratic republic with a Shia Islamic political system based on velayat-e faqih (guardianship of the jurist). Shia clergy, most notably the rahbar (supreme leader), and political leaders vetted by the clergy dominate key power structures. The supreme leader is the head of state. The members of the Assembly of Experts are nominally directly elected in popular elections. The assembly selects and may dismiss the supreme leader. The candidates for the Assembly of Experts, however, are vetted by the Guardian Council (see below) and are therefore selected indirectly by the supreme leader himself. Ayatollah Ali Khamenei has held the position since 1989. He has direct or indirect control over the legislative and executive branches of government through unelected councils under his authority.
The supreme leader holds constitutional authority over the judiciary, government-run media, and other key institutions. While mechanisms for popular election exist for the president, who is head of government, and for the Islamic Consultative Assembly (parliament or majles), the unelected Guardian Council vets candidates, routinely disqualifying them based on political or other considerations, and controls the election process. The supreme leader appoints half of the 12-member Guardian Council, while the head of the judiciary (who is appointed by the supreme leader) appoints the other half. Presidential elections held in 2017 and parliamentary elections held during the year were not considered free and fair.
The supreme leader holds ultimate authority over all security agencies. Several agencies share responsibility for law enforcement and maintaining order, including the Ministry of Intelligence and Security and law enforcement forces under the Interior Ministry, which report to the president, and the Islamic Revolutionary Guard Corps, which reports directly to the supreme leader. The Basij, a volunteer paramilitary group with local organizations across the country, sometimes acted as an auxiliary law enforcement unit subordinate to Revolutionary Guard ground forces. The Revolutionary Guard and the national army, or Artesh, provided external defense. Civilian authorities maintained effective control over the security forces. Members of the security forces committed numerous abuses throughout the year.
Government officials materially contributed to human rights abuses not only against Iranians, but also in Syria, through their military support for Syrian president Bashar Assad and Hizballah forces; in Iraq, through aid to pro-Iran Iraqi militia groups; and in Yemen, through support for Houthi rebels (see the Country Reports on Human Rights Practices for Syria, Iraq, and Yemen).
Significant human rights issues included: numerous reports of unlawful or arbitrary killings, most commonly executions for crimes not meeting the international legal standard of “most serious crimes” and without fair trials of individuals, including juvenile offenders; forced disappearance and torture by government agents, as well as systematic use of arbitrary detention and imprisonment; harsh and life-threatening prison conditions; hundreds of political prisoners and detainees; serious problems with independence of the judiciary, particularly the revolutionary courts; unlawful interference with privacy; severe restrictions on free expression, the press, and the internet, including violence, threats of violence, and unjustified arrests and prosecutions against journalists, censorship, site blocking, and criminalization of libel and slander; substantial interference with the freedom of peaceful assembly and freedom of association; severe restrictions on religious freedom; restrictions on political participation through arbitrary candidate vetting; widespread corruption at all levels of government; lack of meaningful investigation of and accountability for violence against women; unlawful recruitment of child soldiers by government actors to support the Assad regime in Syria; trafficking in persons; violence against ethnic minorities; crimes involving violence or threats of violence targeting lesbian, gay, bisexual, transgender, and intersex persons; criminalization of consensual same-sex sexual conduct; significant restrictions on workers’ freedom of association; and the worst forms of child labor.
The government effectively took no steps to investigate, prosecute, punish, or otherwise hold accountable officials who committed these abuses, many of which were perpetrated as a matter of government policy. This included the killing of at least 304 persons during suppression of widespread protests in November 2019 and abuses and numerous suspicious deaths in custody from previous years. Impunity remained pervasive throughout all levels of the government and security forces.
https://www.state.gov/reports/2020-country-reports-on-human-rights-practices/iran/