This is completely and unreservedly stupid. No group has ever gone so far to open doors as white Americans have for black Americans? First of all, even if that were true and not completely condescending, who closed those doors in the first place? This is the sort of tripe people write when they benefit from a system and try to formulate some cockney justifications for keeping it the same, yet the moment something you perceive it isn't fair to you (as in black people getting a perceived leg up) the "life isn't fair so deal with it" mantra goes up in smoke.
I get it, though, you want to believe in this system because you genuinely believe in it and have bought into its equitable access line. All I see, though, are people waxing nonsense about things they know absolutely nothing about and pretending they have it figured out for people they haven't the faintest idea as to how the world works for them, a complete inability to view the world outside of their own perspective.
Yes, I know I will get the brigade after me for these realities, a large reason being there is a false perception of this being a personal accusation of racism when it's far more about something systematic. The fact certain people don't experience it doesn't mean it doesn't exist, nor does the success of some in a group mean the this has become a non factor. Your Nigerian example isn't nearly as good an example as you think, to demonstrate but one thing. These are often people who are often well off in their own societies, allowing them to come to America, and, more importantly, have not experienced the generational issues of black people who have lived here as well a host of other reasons as to why the example is poor. Plus, the issue isn't there is no possibility of success, but greater barriers. Removing the barriers is the objective, not telling people tough ****.
Sorry, you're wrong. You don't know or believe you are wrong, but you are, as are many who have posted here on the topic. And, I will be considered arrogant, an elitist know it all liberal whatever, but all I did to get to this point for myself was stop telling people what they should think and do about themselves and listen to them, which led me to realize I often didn't know what the hell I was talking about when I was doing and advocating the same type of self-serving argument you're giving here.
And, this is the last time I post in this thread because I can only bang my head against the wall so many times before just realizing most have no interest in considering the possibility systemic racism might actually be a thing, bigger than they realize. But, it's not happening to you, so it doesn't exist and those who claim it does are the real problem or hate America or I don't know, whatever the particular aspersion of the day is. Good luck.