There is no forgiveness or apology for those with NO understaning of nuance and think everything is a binary choice; racism no racism, me or you, smart or stupid, I know everything you know nothing, coke or pepsi, democrat or republican. That binary choice assures a mandatory conflict with no true understanding of the grey area. Absent apology, there is an understanding of those without a will or ability to have a nuanced flexability of thought and are just stuck in a binary hell.
There are not only 2 sides to every issue.
For example the bizzare behavior of some people may be due to angst from self isolation - or a hundred other reasons.

You don't needto know biochemistry to make good choices for yourself anyway.