I remembered slightly wrong, it was more complicated than that. A rather right leaning commenter said that if one were to accept that reparations for historical slavery requested by BLM and SJW were valid, then because African-Americans are claimed to be still better off than any other black populations in other countries, the slavers should be celebrated not torn down. The commenter says because this is “morally repugnant” then BLM and SJW are thus wrong. So it’s a case of false equivalence and setting up a straw man Or something (they love their rhetorical flourishes at SSC). So the slavery issue wasn’t actually claimed, but it was set up as a logical conclusion or the opponent’s perceived position, and this was never countered.

Here is the comment on archive.org:

https://web.archive.org/web/20200622224636/https://slatestar...