If you can convince the lowest white man he’s better than the best colored man, he won’t notice you’re picking his pocket. Hell, give him somebody to look down on, and he’ll empty his pockets for you.
Keep in mind, he was talking about what republicans were/are doing, not saying it as something we should do.
It’s decades later, and you’re still carrying that water pail for republicans and dividing Americans by race instead of wealth.