It’s discrimination for cause. They’re illiterate AND entitled. Why would you disrupt your work crew by hiring one that is entitled enough to get away with making the whites and messicans do your work for you ?
Now? Yes I agree, I've seen enough of it personally. But the critical difference is those who do work: their attitudes are lot closer to yours and mine, but the "hate whitey" and racial suspicion still carry a lot of weight. De Tocqueville warned about that: he said there were not one but two impediments to racial reconciliation in the US: i) white prejudice; ii) the black desire for revenge for their mistreatment. As he saw it, both would persist for generations.