In line with Asaf's suggestion that discussion stays on-wiki, there has been initial discussion based on unambiguous example cases of scientific racism at https://meta.wikimedia.org/wiki/Talk:Black_Lives_Matter#Scientific_racism

As the incidents are on a large number of different non-English Wikipedias, an English Wikipedia wikiproject or noticeboard would probably be ineffective as a place to gain a consensus on actions or cross-wiki policies.

Please join the discussion at meta, or suggest at the link above any better venues to analyse and propose constructive ideas to ensure that Wikipedia articles in all languages do not provide the public with misinformation rather than current science fact or properly framed and sourced historical accuracy.

Thanks, Fae