Of course he was a racist. He was a Republican
All men reflect the time in which they live. In years to come people will ask, 'Did America really elect a Born Again Christian as President'. And people who do not understand will jump to the defence of george w bush and the general idea that some imaginary figure can affect man's thoughts. (Yes yes, I know BELIEF in a fairy can affect).
As human beings we all 'judge' our fellows. We judge them on the 'patterns' they exhibit. Black people, brown people, tall people, short people, fat people, female people, male people, thin people. How often have you heard, or even said of a short man, he has 'short man's syndrome' or something similar, or heard that guy is so fat I would not employ him or that woman is so ugly that I would not have her in my house.
So we judge.
It is the responsibility of the judged to present an acceptable face and of the judge to consider that to be unnecessary. The racism in America is of its own making. Drugs, crime gangs, poverty. The racism in the UK is more tribal, although drugs and poverty play a large part.
Most people need to feel superior to some one. Men have always felt superior to women. Women were, in a way, lucky when you brought in slaves - it let them off the hook. Men and women could join forces and feel superior over the black man. In the UK West Indians have, to a large extent, assimilated and join with the original population in their disdain for new immigrants.
We need commonalities. But we often look in the wrong places. There is more in common with the poor white and the poor black and the poor Chinese than ever there will be between the poor white and the rich white. Trouble is many of the poor are too ignorant* to see their true allies.
*By ignorant I do not mean stupid, I mean that they have not had and do not have the opportunities for knowledge acquisition that the more well off have.