These are certainly a minority of black voters but many elections are won or lost by a few percentage points. In a closely divided country, if the Republicans can just reduce the Democrats' 90 percent of the black vote to 75 percent, the Democrats are in big trouble.
Instead of specifically targeting those black voters they might have some chance of winning, Republicans have been trying for decades to placate black "leaders," including the NAACP, and to throw blacks such sops as stamps honoring Paul Robeson and Kwanzaa, and awarding a Medal of Freedom to Mohammad Ali.
Those black voters that the Republicans have some chance of winning over are more likely to be repelled than attracted by Republicans' honoring a communist, the black separatist counterculture and a follower of Louis Farrakhan.
As for black "leaders," as heads of protest movements they need an enemy just to keep their jobs, and where will they find new enemies if they let up on the Republicans? The NAACP's most irresponsible and demagogic insults against Republican presidents did not let up even after Ronald Reagan and both Bushes tried conferring and conciliating with them.
It doesn't seem to occur to Republicans that a strategy which has failed every time for more than 20 years may be wrong.