In 1926, Rasuna Said became active in the communist-affiliated
Sarekat Rakyat (Peoples Union) organization, which was dissolved following a failed communist uprising in West Sumatra in 1927. The following year, she became a member of the
Islamic Union Party, rising to a position in the leadership of the Maninjau branch. Following its establishment in 1930, she joined the
Union of Indonesian Muslims (
Persatuan Muslim Indonesia, Permi), an organization based on Islam and nationalism. That following year, Rasuna who was once again teaching in Padang Panjang, left her job after a disagreement with her employer as Rasuna had been teaching her students about the need for political action to bring about Indonesian independence, and moved to
Padang, where the Permi leadership was based. There, she established a school for girls. On 23 October 1932, at a public meeting of the Permi women's section in Padang Panjang, Rasuna made a public speech entitled "Steps to the Independence of the People in a Greater Indonesia" in which she condemned the ruination of people's livelihoods and the damage done to the Indonesian people by colonialism. She also said that the
Quran condemned colonialism. A few weeks later, in another speech in
Payakumbuh before a thousand people, she said the Permi's policy was to treat imperialism as the enemy. Despite a warning from an official, she continued by once again saying the Quran called imperialism the enemy of Islam. She proclaimed, "We must achieve Indonesian independence, independence must come." Shortly afterwards she was arrested and charged with "sowing hate", becoming the first Indonesian woman to be charged with a
Speekdelict – speaking offense. She was subsequently sentenced to 15 months in jail, which gave her national prominence as her trial and sentencing were widely reported. She used her trial to call for independence, and attracted widespread support. She was jailed in
Semarang,
Central Java. More than a thousand people came to witness the departure of the ship taking her to Java. Rasuna was released from jail in 1934. She studied at a Permi teacher training college in Padang for four years. She also worked as a journalist, writing articles criticizing Dutch colonialism in the
Raya college journal. In 1938 she moved to
Medan, then returned to Padang after the
Japanese invasion of the Dutch East Indies. She was arrested by the Japanese because of her membership of a pro-Indonesian independence organization, but was released after a short time as the authorities feared causing public discontent. In 1943 she joined the strongly nationalist
Giyūgun military volunteer force, which had been established by the
Japanese occupation government in West Sumatra. She helped to establish the women's section,
Hahanokai. ==Post-independence political career==