Task: Question Generation
Input (English): Passage: Makeba was among the most visible people campaigning against the apartheid system in South Africa, and was responsible for popularising several anti-apartheid songs, including "Meadowlands" by Strike Vilakezi and "Ndodemnyama we Verwoerd" (Watch out, Verwoerd) by Vuyisile Mini. Due to her high profile, she became a spokesperson of sorts for Africans living under oppressive governments, and in particular for black South Africans living under apartheid. When the South African government prevented her from entering her home country, she became a symbol of "apartheid's cruelty", and she used her position as a celebrity by testifying against apartheid before the UN in 1962 and 1964. Many of her songs were banned within South Africa, leading to Makeba's records being distributed underground, and even her apolitical songs being seen as subversive. She thus became a symbol of resistance to the white-minority government both within and outside South Africa. In an interview in 2000, Masekela said that "there [was] nobody in Africa who made the world more aware of what was happening in South Africa than Miriam Makeba."Makeba has also been associated with the movement against colonialism, with the civil rights and black power movements in the US, and with the Pan-African movement. She called for unity between black people of African descent across the world: "Africans who live everywhere should fight everywhere. The struggle is no different in South Africa, the streets of Chicago, Trinidad or Canada. The Black people are the victims of capitalism, racism and oppression, period". After marrying Carmichael she often appeared with him during his speeches; Carmichael later described her presence at these events as an asset, and Feldstein wrote that Makeba enhanced Carmichael's message that "black is beautiful". Along with performers such as Simone, Lena Horne, and Abbey Lincoln, she used her position as a prominent musician to advocate for civil rights. Their activism has been described as simultaneously calling attention to racial and gender disparities, and highlighting "that the liberation they desired could not separate race from sex". Makeba's critique of second-wave feminism as being the product of luxury led to observers being unwilling to call her a feminist. Scholar Ruth Feldstein stated that Makeba and others influenced both black feminism and second-wave feminism through their advocacy, and the historian Jacqueline Castledine referred to her as one of the "most steadfast voices for social justice".
Output (English): What is the full name of the person Jacqueline Castledine referred to as one of the "most steadfast voices for social justice"?