Sorry, but I stopped reading right there.
No blacks were "shut out" here that I've ever seen. - Quite the contrary.
No, but the Democrats have been telling them they were shut out for so long, they now believe they were and always will be. Since Democrats can never admit they actually lost an honest election because their ideas sucked, every time they lose, they have to blame it on dirty tricks, rigged Diebold machines, etc. As usual, they ate away like termites at the common good, undermining trust in the system for their own selfish partisan reasons; in this case, keeping minorities convinced that evil Republicans had disenfranchised them so they wouldn't consider how much better off they'd be if they left the Dem plantation for the GOP camp. But it worked so well, many minority Dem voters are now saying, "Well, if my vote never counts, why bother voting at all?" Their cynical strategy has come back to bite them in the rear, and never has such a chomp been so richly deserved.