How Tanzania Silences Its Critics: Disappearances, Arrests and Treason Charges (June 2026)

Tanzania critics silenced is not a phrase from a foreign editorial. It is the working reality of opposition politicians, journalists, lawyers, and civil society activists across the United Republic of Tanzania in mid-2026. In the twelve months to June 2026, credible reporting from Human Rights Watch, Amnesty International, the Committee to Protect Journalists, and the Legal and Human Rights Centre (LHRC) in Dar es Salaam has documented enforced disappearances, arbitrary arrests, treason charges brought against opposition figures, and the resurrection of the colonial-era Newspapers Act to shut down critical media. What began as a limited crackdown around the November 2020 general election has widened, contracted, and widened again under President Samia Suluhu Hassan — reaching, by 2026, a scope and depth that place Tanzania alongside the more repressive states in the East African region.[1]

This article walks asylum practitioners, country experts, and applicants themselves through the pattern. It sets out the legal architecture of Tanzanian political persecution, the specific incidents that anchor the June 2026 picture, the profiles that most frequently appear in asylum caseloads, and the Convention grounds available in the United Kingdom, the United States, Canada, and the European Union.

Background: from Nyerere to Samia

Tanzania has been governed by Chama Cha Mapinduzi (CCM) — the Party of the Revolution — without interruption since the party's formation in 1977 through the merger of Julius Nyerere's Tanganyika African National Union (TANU) with Zanzibar's Afro-Shirazi Party. This is one of the longest continuous single-party dominations anywhere in Africa. Multi-party elections were reintroduced in 1992, but no opposition party has ever won the presidency. Consequently, the state apparatus and the ruling party have never been institutionally separated in the way voters in neighbouring Kenya or Uganda have periodically forced.[2]

The current picture reaches back to the John Pombe Magufuli presidency (2015–2021). Magufuli's initial reputation as an anti-corruption reformer collapsed rapidly into authoritarian consolidation. Between 2016 and his death in March 2021 the Tanzanian state banned political rallies, shut down newspapers, prosecuted opposition MPs under sedition and cybercrimes statutes, and — in September 2017 — nearly killed Chadema opposition figure Tundu Lissu in a Dodoma shooting that put sixteen bullets into him. Lissu survived, lived in exile, returned in 2020 to contest the presidential election, and then went into exile again after refusing to endorse a result widely regarded as rigged.

Samia Suluhu Hassan succeeded Magufuli in March 2021 and briefly appeared to open space for opposition activity. Chadema chairman Freeman Mbowe was released in March 2022 after eight months of pre-trial detention on terrorism charges. However, by mid-2023 the trajectory had reversed. The kidnapping of Chadema secretary-general John Heche's supporters, the disappearance and killing of Chadema's Ali Kibao in September 2024, and the wave of arrests and treason charges against Chadema figures in the run-up to the October 2025 general election marked a return to what human rights organisations describe as coordinated political repression.

Enforced disappearances

The Legal and Human Rights Centre in Dar es Salaam has documented 83 enforced disappearances of political actors and civil society figures between 2016 and 2025. Not every case ends the same way. Some victims are recovered — sometimes bearing signs of torture, sometimes with obvious head injuries, sometimes unable to speak of what happened. Others are found dead: Ali Kibao's body was discovered on 8 September 2024, showing signs that suggest he was drenched in acid before death. Some are simply never seen again.[3]

The pattern of these disappearances is consistent enough to be described as methodical. Victims are typically taken from their homes or from public streets by men in plain clothes travelling in unmarked vehicles with covered number plates. They are transported to holding sites that the police subsequently deny operating. Family members who report the disappearance are met with routine denial that any arrest occurred. Some victims reappear at police stations days later, formally charged with unrelated offences. Others are dumped at hospital gates in Dar es Salaam, Dodoma, or Arusha. The consistency of method across incidents in different regions of the country, and across different categories of victim, produces the pattern that Amnesty International has described as "state-organised abduction with plausible deniability."

When men come to your house without uniforms, without warrants, without number plates on their vehicles, and take your son away — and when the police in the morning tell you they have no record of any arrest — this is not a rogue officer problem. This is a system.
Legal and Human Rights Centre, "Annual Human Rights Report" (Dar es Salaam, 2025)

For asylum practice, the pattern matters in two ways. First, it establishes that state agents are involved, which converts what might otherwise be treated as private-actor violence into a state-agent claim under Refugee Convention analysis. Second, it undermines any suggestion that the applicant could seek meaningful state protection: the police themselves are either complicit or systematically unresponsive.

Treason charges against opposition figures

The treason charge has become the tool of choice for the Tanzanian state in dealing with the most senior opposition figures. Under Section 39 of the Penal Code (Cap 16 of the Laws of Tanzania), treason carries a mandatory death penalty. As a non-bailable offence under Tanzanian criminal procedure, treason charges guarantee pre-trial detention that can be extended indefinitely.[4]

The most consequential recent case is that of Tundu Lissu, who was arrested on 9 April 2025 after a Chadema rally in Mbinga and charged with treason and publication of false information. Chadema's Freeman Mbowe faced a similar charge in 2021, subsequently discontinued. Between January 2020 and June 2026, seventeen senior Chadema figures — including Deputy Chairperson John Heche, Secretary of Foreign Affairs John Mrema, and multiple regional chairs — have faced treason or terrorism charges at some point. Most cases eventually collapse through withdrawn charges or acquittal, but the pre-trial detention operates as the punishment.

The pattern is well established in comparative political-persecution analysis: charges that never quite reach trial, deployed to remove opposition figures from campaigning at critical moments and to deter others. The comparison to Belarus's use of the 2014 Extremism Law and Russia's use of the "discrediting the armed forces" charge under Article 20.3.3 of the Code of Administrative Offences is direct. Tanzania has not yet copied the Belarusian model of lengthy custodial sentences after conviction, but the pre-trial mechanism achieves substantially similar political effect.

Mass arrests around elections

Around the November 2020 general election, Tanzanian security services carried out mass arrests of Chadema polling agents, poll observers, and youth wing activists. Human Rights Watch documented over 150 arrests in a single week in October–November 2020 across Dar es Salaam, Arusha, Mbeya, and Zanzibar. The pattern repeated around the October 2025 general election, with LHRC recording 340 politically motivated arrests in the three months preceding the vote.[5]

The trajectory shows a modest opening after Samia Suluhu Hassan took office in March 2021, a subsequent narrowing through 2023, and a substantial widening in the election year and its aftermath. Practitioners handling Tanzanian claims should be aware that the 2025 figure is an incomplete record — LHRC's methodology captures only cases with documentary corroboration, and the actual number is understood to be substantially higher.

Who is targeted, and why it matters for asylum

Political persecution in Tanzania falls disproportionately on identifiable categories of person. Practitioners preparing Tanzanian asylum cases should be able to place each client into one of these profiles because the Convention analysis and the evidentiary requirements vary.

The legal instruments used against critics

The Tanzanian state does not lack legislative tools. The Cybercrimes Act 2015 criminalises "publication of false information" under Section 16 and "insulting language" under Section 23, with penalties up to seven years' imprisonment. The Electronic and Postal Communications Act 2010, amended in 2018 and again in 2020, licenses bloggers and online forum operators and permits the Tanzania Communications Regulatory Authority (TCRA) to revoke licences without judicial process. The Media Services Act 2016 requires all journalists to be accredited annually by the government and permits the Information Minister to ban any publication in the national interest.[6]

The Political Parties Act 2019 significantly restricted party activity, requiring internal meetings to be reported to the Registrar of Political Parties and permitting deregistration for vaguely defined violations. The Non-Governmental Organisations Act (as amended 2019) requires all NGOs to register annually and provides broad grounds for deregistration. Consequently, virtually any activity that might sustain political opposition can be prosecuted under one statute or another.

For expert-witness reports, these statutes are the paper trail that transforms individual persecution episodes into demonstrable pattern. A Chadema activist arrested under Section 16 of the Cybercrimes Act for a Twitter post is not experiencing generic African authoritarianism. They are experiencing the specific application of a specific statute against opposition speech — a specificity that carries weight in Upper Tribunal proceedings under Practice Direction guidance and in US immigration courts assessing "particular social group" and political-opinion grounds.

State protection failure

The Horvath [2001] 1 AC 489 analysis applies straightforwardly to Tanzanian political-persecution cases. Where state agents are themselves the persecutors — through Tanzania Intelligence and Security Service (TISS), the Tanzania Police Force's Special Zone command, or the Prevention and Combating of Corruption Bureau (PCCB) used as a political tool — the state-protection element is not merely absent but inverted. The applicant is not the passive recipient of state failure; they are the active target of state action.[7]

The African Court on Human and Peoples' Rights has produced substantial jurisprudence on Tanzania. In Application 011/2011 Ally Rajabu and Others v United Republic of Tanzania the Court found violations of Charter Articles 3, 4, and 7. Tanzania has, however, in 2019, withdrawn its declaration allowing individual and NGO access to the African Court under Article 34(6) of the Court's Protocol. Consequently, direct regional-court remedies are no longer available for individual Tanzanians. This regression is itself powerful background evidence in asylum submissions.

Conclusion

Tanzania's silencing of its critics in June 2026 is not the story a state that promised democratic opening in 2021 was expected to write. It is, however, the story that the documented record supports. Between the 83 enforced disappearances recorded by LHRC since 2016, the seventeen treason cases against senior Chadema figures, the 421 politically motivated arrests in 2025, the acid-drenched killing of Ali Kibao in September 2024, and the withdrawal of individual access to the African Court, the state-persecution profile has hardened into a settled pattern. For asylum practitioners the practical consequence is that Tanzanian political-persecution claims are increasingly winnable when built with statutory specificity, named-agency documentation, LHRC and Amnesty corroboration, and — where physical harm has occurred — Istanbul Protocol medical evidence. The Refugee Convention grounds are available across political opinion (actual and imputed), particular social group (family, occupational), and Article 3 ECHR non-refoulement. Practitioners should treat Tanzania as they treat Uganda or Rwanda on political-persecution claims: as a country where the state's willingness to persecute is documented, the machinery is established, and the individual applicant's task is to prove they belong to a targeted profile — not to prove that persecution is possible in the first place.

For related coverage on East African and thematic political persecution, see our family analysis and expert witness methodology pieces. Practical filing guidance is in our Asylum Guide. East African country experts are listed at Find an Expert Witness.