If black folks could avoid the notion that mixed people are superior then there woulddnt be racial idenity issues, a biracial person isn't the same as a black person like nikkas like to claim. But breeding with us ain't gonna hurt the black race. That small amount of white genes can disappear eventually.
Here's what you miss: Whites tend to treat biracials and mixed better than blacks as whites subconsciously react to the more Caucasoid features, similar to the way they have a preference for own purer white features, everything else being equal*. They think the mixed person more "personable" and "human", that sort of way, because the person more resembles themselves. For example, studies have found that discrimination in the legal system happens more along an African facial feature than skin color gradient, meaning that those who feature more prominent and stereotyped African facial features get discriminated against more than those without. Skin color isn't nearly as important as *African facial features*, which in turn is correlated with skin color. This is an example of an issue which blacks did not create but which affects them nevertheless b/c of another group's preferences. Whites just associate blackness with criminality and inferiority.
Blacks in a white society internalize the white's preference and interpret it as correct as biracials and mixed are elevated by whites above typical black stations (ie. go to MSNBC and look at the so-called colored people they have there), while still retaining some resemblance to blacks. The resemblance gives mixed and biracials a type of "authenticity" which blacks internalize, creating self hate as blacks see the upper class as light and mixed while the lower class is darker.
Eventually the mixed and biracial form a caste above the dark purer blacks, with the whites on top. The blacks then see this caste as representative and so goes society. Because whites and their preferences rule, those who they favor within the lower classes will always elevate higher than those they do not. The darkest people will sit at the bottom while the lightest will sit at the top per general. This representation will influence the lower classes and accordingly influence self hate in blacks, since most of them are lower class and aspire to be upper class. When the upper class is mixed that is what the blacks aspire to. So like I said, breeding with half breeds causing confusion. This is the case in Brazil as well as America, except it's more obvious in the former than the latter case.