Sita Valles

In 1977, Dias Valles married Van-Dunem and had a son with him.

In Luanda, what was said to be an attempted coup d'etat was launched on 27 May 1977. The attempt was foiled due to the support of the Cuban Revolutionary Armed Forces, then stationed in Angola. Alves, van Dunem and Dias Valles were deposed from their official positions. The attempted coup was followed by a period of two years of bloody pursuit of (real and supposed) followers and sympathizers of Nito Alves leading to thousands of killings — though it is open to question how far the attempted coup itself was the cause of this pursuit and how far exaggerated accounts of the event were used to legitimate a purge of "an untold number of tiresome critics".

Dias Valles was among those killed in this period. She was accused, without the right of contradiction, of being one of the brains of the alleged putsch of May 27, 1977. She is thought to have been shot in August of that year. According to Leonor Figueiredo,

It is said that Sita Valles was shot at five in the morning of August 1, 1977. One shot on each leg, one shot on each arm. The body fell into the ditch that had been previously dug, before the deadly firing. Of what remained of Sita, after the torture and the orgy of rape by the men of the Angola Information and Security Directorate (DISA), the regime's political police. A tractor flattened the ground. It is also said that the beautiful, elegant and intelligent communist of Goan origin -- a Portuguese with an African heart -- remained rebellious until the last moment. She said she was not afraid and that the sooner they killed her the better. By refusing to be blindfolded, she forced the snipers of the firing squad to meet her gaze before pulling the trigger."

In Luanda she was considered to be part of the ideologically more-orthodox wing of the People's Movement for the Liberation of Angola (MPLA), seen as pro-Soviet, which was directed by Nito Alves and José Van-Dunem. By 1976, Alves was the new MPLA government's interior minister while Van-Dunem, an ex-political prisoner and a key political commissar in the army. Sita Valles became "a leading functionary in the government’s Department of Mass Organization".

On the Carnation Revolution of April 25 1974, which erupted in Angola following the overthrow of the Salazar dictatorship in colonial Portugal, Dias Valles was in Moscow participating in a congress. She decided to return to Angola in the summer of 1975 to participate in the revolution

When she continued her studies in Lisbon, from 1971, she became part of the network of Communist militants and in the União dos Estudantes Comunistas. There, she would grow into one of the prominent figures next only to Zita Seabra.

Sita Maria Dias Valles (Cabinda, 23 August 1951 – Luanda, c. 1 August 1977) was a member of the Portuguese Communist Party, in charge of the União dos Estudantes Comunistas (or Communist Students' League). She was tortured and brutally murdered following the events of May 1977, presumably in August 1977 in Luanda, Angola. In the assessment of Leonor Figueiredo, Sita Valles had a very short but intense life: her conscience objected to the injustices that ruled the world, and turned into a political whirlwind. Sita Valles has been called "A 'Passionária' de Angola" (The Passionaria of Angola).

Born in 1951, Dias Valles was the daughter of Edgar Francisco da Purificação Valles and Maria Lúcia Dias Valles. Sita grew up in the Angolan capital Luanda in a prosperous family of Goan origin.