Proposal 

I propose a solution to the issue posed by the guideline regarding disambiguation pages (and the resulting AfD): keep the article, and simply remove "(disambiguation)" from the article title. Thus, this would become the article Apartheid, with a short definition and citation to the Afrikaans origin, and then links to the various usages, with History of South Africa in the apartheid era being the first and most prominent link, with the others following, retaining the language about usage being an analogy to South African apartheid. 

This solves the disambiguation guideline issue. I don't believe there is a consensus to delete this article, and argued in favor of keeping it, but I acknowledge the argument that it is less of a literal/classic disambiguation page and more of a "here are some uses of the term which have Wikipedia articles" page. I believe there are a number of precedents for that type of page, where a term is discussed in different contexts, some or all of which have individual articles.