"It Was All A Lie"...
"It hadn't always been that way. Before 1964, Republican presidential candidates could expect to get between 30 and 40 percent of the African American vote. Dwight Eisenhower got 39 percent in 1956. Four years later, Richard Nixon campaigned with Jackie Robinson and won 32 percent of black voters. In 1964, Barry Goldwater opposed the Civil Rights Act, and his black support plummeted to 7 percent. Since 1964, no Republican presidential candidate has broken 17 percent with African American voters, and by 2016 only 3 percent considered themselves Republican."
Which party fought for, and won, Civil Rights for African Americans?...the Black voters of America know who's on their side...and it's not today's GOP.
Either you are woefully ill-informed, or incredibly desperate to cling to a fallacious 'trope'...maybe both.