In short, they believe in the power of Big Government to solve their problems. That they're actually worse off under Obama does not register in their consciousness. Their thinking is that despite the present problems, eventually, Obama will make things right. He won't, he'll make a worse situation worse because socialism always makes things worse, but I doubt they see it that way.
Actually it’s just a pride thing at this point. Black people in this country voted for Obama almost exclusively because of the historical significance of electing the first African-American.
When you are so heavily invested in Obama, you put the blinders on and look straight past a hugely failed President. Nobody wants to be wrong and very few want to openly admit they were wrong. There were still some people that hung on to the miserable failure of Jimmy Carter up until a few years ago.
It’s more; it’s about payback, about getting free college, free phones, $XXX,000 per person restitution, etc. It’s based purely on race, therefore by definition racist. And it’s that which can not be spoken, though all know.