A question is:
What do you think of the colour red?
A leading question is:
What do you think of the ugly colour red?
If we're being generous then the question you asked is an 3-paragraph highly suggestive leading question.
Some more examples:
Why does Trump dislike Mexicans?
Trump is a racist and spreads lies about Mexicans. Which other Presidents had such a hate-on for Mexicans?
Did Obama's economic policies help or harm the U.S. economy?
Obama's economic policy was an unmitigated disaster. How much money did we lose?
Well, and so forth...
It is objective question
To paraphrase Arthur Dent: "This must be some strange and obscure usage of the word 'objective' I was not previously aware of".
It's really not an objective question. It's full of highly controversial assumptions and interpretation of events. Weaselwords like "leftists" aren't improving things either, and accusing the modern Democratic party for the U.S. history of slavery really takes the cake.
In short, the text of your question is full of information that is controversial. Many will disagree with it. You could be completely right for all I care, that's not the point. The point is that this is a site which attempts to build content based on expertise, and not opinion. Opinionated questions are simply not a good fit. It's just not what we do. I strongly urge you to read this and this if you haven't already to better understand what we do and what we don't do.
There is certainly a salvageable question here. Look at Why did Obama commute Chelsea Manning's sentence? for an example (but other questions could be asked as well).
However, judging by the (now-deleted) comments you've left on my answer there, it seems you didn't exactly grasp the difference between "please explain this person's motivation" and "please offer your opinion on this" there.