Human rights — Right to life — Right to dignity — Right to fair trial — Right to be heard within a reasonable time — Right to be heard by a competent court — African Charter on Human and Peoples’ Rights, 1981, Articles 4, 5, 1, 7 — Obligation to give effect to rights in the Charter — Whether Tanzania’s imposition of mandatory death penalty violating applicants’ rights to life and dignity

International tribunals — Jurisdiction — African Court on Human and Peoples’ Rights — Material jurisdiction — Whether Court having jurisdiction to hear the application — Admissibility — Whether application admissible — Exhaustion of local remedies — Whether application filed within a reasonable time