This is in the context of the Rhodes Must Fall movement- looking particularly not at the aim to remove statues but to decolonise institutions of learning and curricula.
I've heard at least one historian (Peter Frankopan) dismiss this, suggesting that students do some reading about slavery in other cultures. I disagree with him. To my mind, other forms of slavery neither mitigate the crimes of (say) the British Empire, nor do they have the same influence that colonisation has had upon the Eurocentric nature of knowledge and learning worldwide.
I'd be interested in other people's thoughts, however.
First of all, as a historian of empire (and southern Africa), I do not think dismissal is ever warranted on such a matter. Analysis always is, even if one feels the impulse is misplaced. There is a reason that these pushes for re-assessment occur, and that must be understood. Frankopan does make an effort but falls a bit short, but it is only a fairly brief video [edit 2: unless OP has a written discussion of his in mind that's evaded me?].
The question for me involves what a truly "decolonized" history curriculum would look like, in practice, when colonialism played such a massive role in creating the modern world with its peculiar set of legacies. In that, there is a wide range of opinion, and even the question of whether history as such comprises a valid subject comes up, because one of the most visible legacies is the structure of the academy itself. While history in South Africa specifically was quite radical and played an important role in helping to upturn apartheid mythologies and explore the ugly side of colonial history in the 1970s and 1980s, it has become balkanized and disfavored since 1994 compared to more pragmatic kinds of subjects, and enrollments as well as posts in history have diminished dramatically. [edit: This is despite efforts by many to broaden the appeal of meaningfully inclusive histories actively, which I feel has produced some excellent work that challenges colonial categories, such as Paul Landau's Popular Politics in the History of South Africa.]
My view tends to be a bit more conservative than some, for I think there is a baby in all that colonial bathwater, but it is essential that we understand colonialism critically in its past and present variations. However, we require better tools (wider sources) and a wider range of academic viewpoints--not just those of colonialism's privileged--in our efforts to tell a more complete story of encounters and exchanges in the world. We must not simply recuperate "lost voices" but understand the effects they actually had, and have, on the people who came after. We must understand these effects not only for the privileged (the heirs to the colonizers, or their proxies) but for everyone. Then again, history--in content and form--is as much about the present as the past, so sooner or later we must deal with our varying visions of what a decolonized history must or must not look like. Premesh Lalu's The Deaths of Hintsa is an interesting look into the colonial and postcolonial narratives of that 1835 event while probing the directions for the postapartheid era, although today's discussions might be quite different already.
[edits 1 & 2: grammar plus disambiguation, so tired]
[edit 3: A TLDR. I suppose my short answer would be that the calls to decolonize history further should neither be celebrated nor dismissed, but carefully discussed, understood in past and present contexts, and employed to push inquiry, interest, and broad relevance forward.]
I don't know much about this movement--for context for the question, could someone explain what it means to "decolonize" institutions of learning, and how that is relevant to history/the teaching of history? Tearing down statues doesn't really effect how things are taught: does this movement want specific curriculum changes or something?
It's funny that we've been discussing Rhodes Must Fall, and I just got an email from the African Books Collective that includes a volume which may interest you because not only is it recent, but it's from the vantage of an accomplished African scholar.
#RhodesMustFall: Nibbling at Resilient Colonialism in South Africa, by Francis Nyamjoh. (Yaounde: Langaa, 2016.)
Perhaps it will be of some interest? I am certainly going to try to get my hands on a copy. ABC does a good job of assuring these books are available in the US and UK, as they are sometimes hard to get overseas.