BY NOW, it is very easy for you to google search
"skin of blackness" and "mark of Cain"
I refuse to believe, that in this thread, you are "UNAWARE" of these quotes from the pearl and the BoM.
And that website, which has been analyzed does NOT address these issues, because it makes excuses (other religions were doing it too) excuses, and tries to paint it all as a metaphor (which was not what the mormon prophets taught, nor was it appropriate, considering blacks were oppressed because this concept/ and the misinformed passage was taken SO LITERALLY).
It's like saying some Germans in europe went around calling Jews "devils" as a metaphor, during the 1930s... and we should just, right now
Do you have some direct quotes?
Here is a website that addresses many of the supposed issues.