Black is bad because it represents the night, an evolutionary dangerous time. Light/white is good because daylight is safe. Humanity has had these associations long before race was ever considered.

Look, they corrected themselves (somehow)

https://magic.wizards.com/en/articles/archive/news/depiction...

Like I care about HN karma :)

There are many racial issues at WotC that need fixing, many.

Darkness vs Light