Whaaa? 
What would you contend? Seems you went off course there a bit and landed on Columbus, (no pun0)
What issue of our past unanswered? Thought you read African History?
What race has no stigma? 
Who controls your image and to who is this image being sent to?
I don't get the crux of your post
No problem... damn distracting gif...I will mention first that the plight of another race is not my own, my backyard must be tended first.
Simply put, the Willie Lynch letter itself has not been proven as a valid letter as all have contended in here...yet. The methods used as tools for the African slave trade are shown in some of the issues which plague the psyche of our people today... as well as the stigma which all of African descendants currently hold. Our issue with the letter, still goes far deeper and is only part of the problem of systemic problem from Africa's fall.
We had to reclaim our history through anthropology, through scientific testing. through archaeology, and through philology among other sciences, and still African history hasn't been placed in the curriculum of world history in many school systems. After our people were evicted from our conquered European lands, and the start of enslavement, history in itself have been whitewashed to match Eurocentric means. All historical merit accepted and known throughout the world was changed to match it, including those on the continent after it was carved up. All of this done to have history match the conquerors instead of the truth, with Africans who were for the most part cosmopolitan turned into the uncivilized savage. Even Egypt, which has been only one of the great African nations but which can't be ignored since so many old writings include it and its Pharaohs and Queens were whitewashed from African in descent to Arabian, hell, even Memnon who kicked Achilles' ass and was Ethiopian was written in the Aithiopis by Homer, a book which came after the Iliad which was of course, forgotten.
We had to dispute every lie which was set forth, patch together the obvious and prove which was as obvious as the nose in their face, such as the pyramids in Africa, South America, and Asia which has our writing on the walls but was never thought that Africans done it... it was done by aliens.
We had to dispute that of course Christopher Columbus, or Christopher Colon, or Salvador Fernandes Zarco, or Cristobal Colon, whichever name you wish to take for the dude but all names for the same man, 'discovered' America as we forget that Africans have already made contact and trade with natives since Abubakari the Second of Mali and initial contact even as far back as 700 BC if you include carbon dating of pottery, drawings on caves, big ass head sculptors on Easter Island, the campus of LSU has an amphitheater.
These are only the minor things which are not taught in schools, and yet we bypass it for the lies which are taught our kids and never rectified. Our history as part of world history is the basis of history period, yet the importance we gain in America could be placed in February for acknowledgment...the shortest month of their calendar.
Image control
Your image is being controlled by not only the news stations and their nationwide reports based on half facts given by valid sources [such as more black men in college than prison, black men's dead beat dad percentage which doubled and still twice as less as Cacs, welfare numbers, dropout numbers, crime numbers, judicial sentencing], they also took the time to engineer the trend of music and movies to sustain stereotypical images of Africans and those of African descent. It is the sell out which accepts the money and works as a puppet for their agenda, or sells the drugs on the street which they brought into the nation and placed in areas of high concentration, or defend their 'help', or even say that we are treated as 'equals' to them...
We have been fucked with no Vaseline for so long we accept it with a smile and a jig, and one letter which can't be proven yet everyone argues of the validity of the word ignores the bigger picture of its meaning... your chains are still there... you are truly still in bondage... you are still chattel... until you reclaim all which is yours. This is not being a victim, you are still a victim regardless if accepted or not. If not, the need for civil rights wouldn't exist, the question of the need for Affirmative Action wouldn't be a subject, there would not be any disparagement out of their mouths, there wouldn't be a question whether you are African American or simply American, there wouldn't be an altered set of laws in which to imprison one people more than the other, listing could go on for this simple fact.
Until you are dealt with in relation to land, history, and culture. You must respected in relation to nationality. Without these, you will not be treated as an equal, considered equal, or respected as such... and still worse legally if you technically have the names adopted by your former slave homes... thank you Dred Scott.