The book "Empire, Global Coloniality and African Subjectivity" is authored by one the leading scholars of ideas relating to decolonization and coloniality. In this 2013 book, Sabelo Ndlovu-Gatsheni draws out the meaning and implications of coloniality, and sets the foundation for his widely cited 2018 book (Epistemic Freedom in Africa). There are chapters on South Africa and Zimbabwe as cases. A few notes:

"What is emphasized here is one of the core ideological life-springs of colonel conquest and colonial violence was the questioning of the very humanity of colonized people. Questioning the humanity of the colonized people authorized even slavery and other forms of abuse, repression, exploitation, and domination..." (p. 35)

"Global imperial designs refer to the core technologies of modernity that underpinned its expansion into the non-Western parts of the world from the fifteenth century onwards. Race and Euro-American epistemology, particularly its techno-scientific knowledge claims, were used to classify and name the world according to a Euro-Christian Modernist imaginary. African peoples, and others whose cultures and ways of life were not informed by imperatives of Euro-Christian modernity, were deemed to be barbarians - a people who did not belong to history and had no history." (p. 49)

"The field of development studies is terribly affected by what Žižek terms 'weak thought' as opposed to 'strong thought' privileging what he described as 'large-scale expansions' and 'true ideas' which are 'indestructible' and have the capability to 'always return every time they are 'proclaimed dead'. Weak thought has even blinded some academics and intellectuals to such an extent that they continue to uncritically believe in the innocence of development discourses and to defend wrong causes when they masquerade as possessive and developmental and operate under such acceptable terms as democracy, reform development, good governance, and humanitarian intervention without recognising and sifting out the dangerous colonial matrices embedded in them." (p. 82)

"What is wanted is a higher education that does not lead to alteration of African people from their societies and communities. But cultural transformation does not mean the disconnection of Africans from the ambit of global human society and broader human problems. it only implies that a confident African is one rooted in his or her society and whose locus of enunciation is African, Such an African would be able to formulate culturally friendly resolutions of the challenges facing the continent. Particularly speaking, cultural transformation, when creative, seeks a way of blending African and Euro-American epistemologies in an endeavour to advance and enrich the understanding of African experience, problems, and challenges. But it also entails a drive to decolonize knowledge, curriculum, epistemology, pedagogies, power, and institutional cultures" (p.180) 

For students looking for an introduction to decolonization, or faculty looking to catch up on conversations they have been missing (or conversations they have avoided or actively sought not take part in), Sabelo Ndlovu-Gatsheni has brought it together for you in Epistemic Freedom in Africa: Deprovincialization and Decolonization (2018). As the title implies, this book is rooted in the African perspective of decolonization, which makes it somewhat unique that books written from other vantage points (e.g. Mignolo). For those deeply embedded into these conversations, Sabelo's other work presents more of his own contributions, whereas this book summarizes much of what the major leaders have contributed (the book includes a lot of quoted content from these leading thinkers, which is a resource for those not familiar with those works). Two chapters are Open Access here.

Some notes:

"This affirmation and validation take the form of publication in the so-called international, high-impact and peer-reviewed journals. Europe and North America constitute the 'international' and the rest of the world is 'local'. Consequently, international, high-impact, and peer-reviewed journals and internationally respected publishing houses and presses are those located in Europe and North America. Highly ranked universities are located in Europe and North America. Taken together, these realities confirm the existence of epistemic hegemony. The signature of epistemic hegemony is the idea of 'knowledge' rather than 'knowledges'" (p. 8)

"Hountondji (1990: 10) distilled 13 "indices of scientific dependence". The first is dependence on technical apparatuses made in Europe and North America. The second is dependence on foreign libraries and documentation centres for up-to-date scientific information. The third is what he termed "institutional nomadism, a restless going to and fro" European and North American universities. The fourth dependence manifests itself as 'brain-drain'. The fifth is importation of theory from the North to enlighten the data gathered in the South. The sixth dependence is aversion to basic research and sticking to the colonial ideology of instrumentality of knowledge. The seventh problem is in choice of research topics that is determined by interests of the North where knowledge is validated (Hountondji 1990: 12). The eighth dependence is confinement to territorial specialisations in which African scholars are often reduced to native informants. The ninth form of dependence is that African scholars are engaged in scientific research that is of direct service to coloniality. The tenth issue relates to research into indigenous knowledge which eventually is disciplined to fit into the modes of Western science. The eleventh challenge is that of linguistic dependence on six European languages (English, French, German, Spanish, Italian and Portuguese) in teaching and research. The twelfth index of scientific dependence is a lack of communication among African scholars as most prefer "a vertical exchange and dialogue with scientists from the North than horizontal exchange with fellow scholars from the South" (Hountondji 1990: 13)." (p. 25-26)

"What emerges from these questions is the importance of the material to which students are exposed and the consciousness of the teachers in the delivery of the material. Most often one gets the impression that it is the quality of students that is discussed and very little is said about the quality of the teachers and their consciousness. There is a lot that is wrong with the academics produced by Western-style universities... If indeed the key problem with the African academics is that of consciousness caused by miseducation, then the focus on changing the very idea of the university as the factory that produced the academics and intellectuals should be accompanied by re-education of its products." (p. 84)

"It is not surprising that, as an institution, the Westernized university in Africa is today the key site of struggles for decolonization. In the first place, it is the universities that promised freedom of thought only to stifle it through religiously adhering to a Eurocentric epistemology and Western-centric cultures and practices. In the second place, the university has the highest concentration of young people who are eager to understand why the institution is still maintaining alienating Eurocentric cultures and is not resolving and question of cultural and practical relevance of what it delivers. In the third place, despite the institutional constraints, the university is still the space where ideas are explored endlessly. Finally, it is within the confines of the Westernized university located in Africa that the youth encounter face-to-face epistemic and pedagogical brutalities that provoke them to rebel." (p. 163)