www.alternet.org/civil-liberties/we-celebrate-mlk-day-tomorrows-anniversary-citizens-united-reminds-us-increasing
"That shifted remarkably in 1964, with the selection of Barry Goldwater as the GOP presidential candidate. Goldwater and his conservative faction were fiercely hostile toward the liberal policies that had been pursued by Democrats and Republicans alike since the New Deal. With activist government widely popular, though, Goldwaterites decided to try race baiting.
King clearly saw and loudly protested the Republicans’ new racial politics. Until then King had avoided partisanship, but when the tenor of Goldwater’s campaign became evident, King spoke out forcefully: “While not himself a racist, Mr. Goldwater articulates a philosophy which gives aid and comfort to the racists. His candidacy and philosophy will serve as an umbrella under which extremists of all stripes will stand"."