Opposition politician Esther Matiko (center) and her supporters, with police in the background, before being arrested at a campaign rally on August 8, 2018, in Tarime District, northern Tanzania. (Sitta Tumma)
Opposition politician Esther Matiko (center) and her supporters, with police in the background, before being arrested at a campaign rally on August 8, 2018, in Tarime District, northern Tanzania. (Sitta Tumma)

Tanzania police detain journalist overnight on allegations of unlawful assembly