Why are AA communities mostly Democratic?

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Firstly:

Low-income groups tend to vote Democrat, and Blacks have high poverty rates, high unemployment rates, low educational achievement, and low median income. For these disadvantaged groups, the Republicans' "rugged individualism" has less appeal than the Democrats' "we're all in this together" message does.

Secondly:

75% of African-Americans are born out-of-wedlock, and a significant amount grow up under a single-mother. Whereas Democrats will extol the bravery of single-mothers, Republicans will frequently praise the traditional, two-parent household and publicize the well-documented effects of single-motherhood (i.e. more crime). Indeed, Black women vote Democrat by a significantly larger margin than Black men do.

Thirdly:

Republicans are less favorable towards affirmative action, criminal justice reform, the war on drugs, and public schools than the Democrats are; and Blacks care about those topics.

Fourthly:

There is a popular conception that many Republicans are racist, as provoked by the Republicans' support for law-enforcement ("Blue Lives Matter" over "Black Lives Matter") and their opposition to illegal immigration.

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About Black Men voting more Republican than Black Women White Men vote more R than White Women and Hispanic Men vote more R than Hispanic Women.

Exit polls in 2012 showed that Black men were nearly 4 times more likely to vote for Romney than Black women were (albeit, from 3% to 11%). Young black men were nearly 20 times more likely to do so than young black women.

The other races are not so divided by gender.