Question: Who was the South African anti-apartheid activist that Mthuli ka Shezi's writings reflect?

Context paragraphs:
Sheena Duncan: Sheena Duncan (7 December 1932 – 4 May 2010) was a South African anti-Apartheid activist and counselor.  Duncan was the daughter of Jean Sinclair, one of the co-founders of the Black Sash, a group of white, middle-class South African women who offered support to black South Africans and advocated the non-violent abolishment of the Apartheid system.  Duncan served two terms as the leader of Black Sash.

Dullah Omar: Abdullah Mohamed Omar (26 May 1934 – 13 March 2004), better known as Dullah Omar, was a South African anti-Apartheid activist, lawyer, and a minister in the South African cabinet from 1994 till his death.

Letitia Sibeko: Letitia Sibeko (born 1930) was a South African anti-apartheid activist.  She was member of the African National Congress, the ANC Women's League as well as the Federation of South African Women.  She later joined the Communist Party.

Samuel Sisulu: Samuel Sisulu (June 1956 - June 2003) was a South African anti-apartheid activist, Soweto uprising student leader and founder of South African Freedom Organisation (SAFO).  He was jailed at various prisons including Robben Island in 1978, two years after the 1976 Soweto uprising.  Samuel Sisulu was charged under the Terrorism Act.  Reported in WIP 3.  He was mentioned in the indictment of Paul Langa and found guilty of founding South African Freedom Organisation (SAFO), attempting to cripple the economy of the country by bombing the apartheid government, inciting persons to persuade taxi drivers not to transport workers to place of work, aid strikes, unlawfully aid students in their fight against Bantu education and was also found guilty of recruiting people for military training.

Matthew Goniwe: Matthew Goniwe (27 December 1947 – 27 June 1985) was a South African anti-apartheid activist, and one of the 'Cradock Four' murdered by the South African police in 1985.

Mthuli ka Shezi: Mthuli ka Shezi (1947 - 1972) was a South African playwright and political activist.  He was a student activist when he attended the University of Zululand, and in 1972 he was elected the first vice president of the Black People's Convention.  His writing reflected the struggle of recovering African identity in colonial and post-colonial societies , a topic which reflects his involvement in Steve Biko's Black Consciousness Movement as well as the influence of Frantz Fanon.

Mkhuseli Jack: Mkhuseli "Khusta" Jack (born 31 May 1958) was a South African Anti-Apartheid activist in the 1980s, known for his involvement in the Anti-Apartheid struggle and his efforts in the Consumer Boycott Campaign.  Currently he is a businessman in Port Elizabeth, South Africa.

Steve Biko: Bantu Stephen Biko (18 December 1946 – 12 September 1977) was a South African anti-apartheid activist.  Ideologically an African nationalist and African socialist, he was at the forefront of a grassroots anti-apartheid campaign known as the Black Consciousness Movement during the late 1960s and 1970s.  His ideas were articulated in a series of articles published under the pseudonym Frank Talk.

Gcina Mhlope: Nokugcina Elsie Mhlophe (born 1958) is a well-known South African anti-apartheid activist, actress, storyteller, poet, playwright, director and author.  Storytelling is a deeply traditional activity in Africa and Mhlophe is one of the few woman storytellers in a country dominated by males.  She does her work through charismatic performances, working to preserve storytelling as a means of keeping history alive and encouraging South African children to read.  She tells her stories in four of South Africa's languages: English, Afrikaans, Zulu and Xhosa.

Bongani Msomi: Bongani Msomi is a South African politician and the current secretary general of the UDM, a political party founded by South African anti-apartheid activist Bantu Holomisa.

Supporting paragraphs: Mthuli ka Shezi Steve Biko
Answer: Steve Biko