That's easy to explain by showing why they like your side. When your side gives them excuses, those that take the easy way out accept those excuses. Hillary and Bernie both are doing just that. When you tell a group of people as a whole the reason your group is in such bad shape is because of race, even when it's not true, those wanting the easy way accept it. Doing otherwise actually involves an effort many don't want to make.
When more than 70% of the babies born to that group stop being bastards let me know. Until then, look at the problems such a verifiable situation can produce and you'll get your answer why that particular group isn't as well off as other groups. First, you have to admit there is a problem and secondly, have to be willing to solve it and not make excuses for it. You aren't willing. I am.
