I find this comment goes deeper when I followed Jeremy Lin's progression into the NBA. I suggest anyone who is interested in your comment should read too. Lin wasn't systematically denied entry, but the kind of stuff he faced and endured based on his race - which was admitted to by a coach, was pretty bad.
And I feel this type of behavior that he faced - when your race is in the minority of the place you're trying to get to/be at - can be applied elsewhere. Like Black people thinking that others might think that they got there based on affirmative action and not by merit, or Asian Americans thinking that others think there are "too many Asians" here or the likes.
In some situations, minorities aren't being outright denied by law/whathaveyou but they are put in potentially "hostile" environments where they might feel like they don't belong, which can be akin to being denied socially.