Tanzania’s main opposition said hundreds had been killed in three days of election protests, with the country still under an internet blackout on Friday and the government denying any use of “excessive force”. A security source and diplomat in Dar es Salaam both said that deaths were “in the hundreds” as protests continued on Friday. President Samia Suluhu Hassan had sought to cement her position and silence critics in her party with an emphatic win in Wednesday’s election, in which her main...