Identity politics. Blacks DO NOT CARE. Nor does any other group that gets locked in to voting for one party because they've been trained to hate the other. Hispanics are increasingly acting like blacks when it comes to voting habits. If Obama at a living baby on live TV, they would still vote for him. Blacks will NEVER vote Republican in our lifetime. They see conservatives as the enemy first and foremost - people who can't relate with them and might take away their freebies. Detroit, for example, is a failed city and yet the the inhabitants will keep voting Democratic no matter what (they'd actually vote for Kwame Kilpatrick again if they could). The idea that people in Democracies can be counted on to self correct is WRONG. Populations will choose the wrong course and stick with it to their demise. There is no evidence in history that people somehow can be counted on to do the right thing.
The fact that is the US proves you wrong.
The fact that there is the US proves you wrong.