Good analysis overall. However, it's 1 IN 3 black men -- not black men on average -- who don't live to see Social Security. Black men's life expectancy is 68.6 years. You did ignore the police brutality and harassment piece though. Until Republicans address that issue head on (and many law-abiding citizens experience it, particularly harassment), many black folks won't listen to the other messages.
90% of blacks vote Democratic because 90% perceive their interests to be with the Democrats. Period. People associate Republicans as for rich white people only, and back-of-the-busism. Republicans have a HUGE image problem, and fail to address their image in media that most blacks ACTUALLY watch and listen. Thus, Dems hold free rein, and it ain't pretty. Not to mention the racist ties and rants of certain Republicans (thus reinforcing the back-of-the-busism claim) don't help the cause of those of us who want to see more swing voting take place either.
Let me address this head on. I am sick and tired of race baiters like MaxineWatersJesseJacksonAlSharpton and the like coming in to exploit the situation whenever a police man gets out of control. Police are human. On occasion they beat up white folks. It happens. Fact is, explaining to blacks that more police are better OVERALL even though some of them get out of control (and need to be punished) is important for selling our point of view. Castrating police or causing overwrought political correctness will do very little to help advance the lives of the average black person living in the inner city. Period. That is what needs to be explained.
There are racists in the Republican Party but there are also racists in the Democrat Party and I think the policies of the Democrat Party have the effect of being inherently racist, whereas the racists in the Republican Party are just stupid and supporting the wrong party.