Complex sentence: Abdurrazack "Zackie" Achmat (born 21 March 1962) is a South African activist, widely known as the founder and chairman of the Treatment Action Campaign (TAC) and for his activism on behalf of people living with HIV and AIDS in South Africa.
Split into simpler sentences: Abdurrazack "Zackie" Achmat (born 21 March 1962) is a South African activist. He is the founder of the Treatment Action Campaign (TAC) and known for his activism on behalf of people living with HIV and AIDS in South Africa.