Nothing, as African Americans do not greatly influence politics.....and the influence that exists today(magnified by the media, much less so at the ballot box aside from a few states and some large cities) will further decline once there is a Hispanic majority. The new Hispanic majority, comprised of people whose descendants are from Central and South America, will be much less likely to cowtow to Black race hustlers and not be overly enthusiastic in constructing another MLK monument. The new Hispanic majority will not fear the African-American "civil rights" cabal and attempt to placate them at every turn, unlike US Whites do.
Blacks, along with largely unskilled Central Americans, are more likely to keep increasingly for-profit private prisons full and stocked. Born into ever increasing broken families, the cycle will only continue and grow.