I really like the way you've framed this because I think it gets at one of the things I find most insightful about Heng's article. It's focused on constructing a long genealogy of race and racist behaviors. And, it seems to me, without having these long genealogies, it's easy to bracket off the past as a time outside of race. Which means the long history of the really chilling example you raise about Jewish badges is easily forgotten.