It has to do with minorities coming to America, finding some success and wondering why the black community can’t seem to break through. This line of rationale is over simplifying the long standing history of racism and oppression that has kept minorities down for generations in the US. All minorities in the US face an uphill battle in a sense, but folks who migrated more recently haven’t experienced it for generations (esp like the pre-civil rights gens did). The playing field is also improving, although still has a way to go, and more recent immigrants are in a better place to possibly find some degree of success. This makes some people, who don’t take the history into account, ask, “I did it, why can’t you?” …which is the republican mentality