Democrat party policies were made in order to appease J.P. Morgan and other white elitist bankers that were funding France and UK war. On 1916 Wilson was elected on the promise of not intervening in the European war. By breaking his promise in 1917, he made it a global war and facilitated the spread of the Spanish flu from Kansas to India. WWI was the cause and the prelude to WW2.
LBJ who started Vietnam war, had similar demeaning attitude to minorities but managed to gaslight it by the “Great Society” plan of overtaking black vote.