A Portuguese branch of Anonymous hacker group said that it has shut down nearly 20 Angolan government websites in vengeance for the young activists who were jailed on Monday, for planning a ''rebellion'' against the Angolan government.
The 17 young activists, including well-known rapper, Luaty Beirao, were sentenced between two and eight-and-a- half years on Monday over their "rebellion against the president of the republic, criminal association and falsifying documents."
On its Facebook and Twitter accounts the Anonymous hacker group shared the list of government websites that were attacked.
... 4 a 8 anos ... de prisão... e de abusos humanitários que nunca serão publicamente conhecidos.
GOV.AO DOWN! pic.twitter.com/CAsKV7ee0h
— AnonPT (@PortugalAnon) March 29, 2016
Government websites have not been accessible since Wednesday.
Amnesty International called the Angolan government to release the activists, who were arrested in the capital Luanda last June, after organising a reading of US academic Gene Sharp's 1993 book, "From Dictatorship to Democracy: A Conceptual Framework for Liberation."
"Angolan authorities use the criminal justice system to silence dissenting views," said Amnesty Director, Deprose Muchena.
"The activists have been wrongly convicted in a deeply-politicised trial. They are the victims of a government determined to intimidate anyone who dares to question its repressive policies."
The activists said that they are peacefully campaigning for Angolan President, Jose Eduardo dos Santos, to step down from presidency.
Angolan President, Dos Santos, has been ruling the former Portuguese colony for 36 years, as he is the second longest serving head of state in Africa.
This month, 73-year-old, Dos Santos said that he would step down in 2018 but the announcement was treated with scepticism because of two similar pledges in the past. His current term in office ends in the end of 2017.