Did you ever notice how the English language describes dark things as worse? Think of 'whitelist' and 'blacklist', or how movies dealing with something bad or evil are called 'dark'. You know who noticed? Black people. Americans have been trying really hard to come up with a name for the descendants of African slaves. It has gone from negro, colored, or black, to African American, to another way of saying colored. But the most common name is still 'black', so all the negative imagery with blackness leaves some room for improvement.
Explicitly racist language has mostly been removed (look up what Brazil nuts used to be called), and people are trying to come up with alternatives to the phrase 'blacklist' (we'll see what catches on). Honestly, it will take some work to change phrases.
We all need to work on positive imagery associated with black skin, so here are a few examples of things that are great because they are black.