The idea in the post title is correct. Some people get on with their lives regardless while others see everything through the lens of racism.

My guess is that the original poster of the coffee shop pic looked at the clientele and just saw "racism" because all the customers were white and the sign on the window says: "coffee for everyone."

The people who are allowed to choose the categories have the power. We all know about men and women (OK, maybe we don't any more!) and Republicans v Democrats, Labour v Conservative, old v young, gay v straight, rich v poor, indigenous v foreign etc. Some categories are more obvious than others but why not invent some of your own?

Why not learn to hate people on account of their eye colour, or their handedness (left or right) or their height or the colours of their front doors? There is a wealth of unexplored hatreds and phobias if only we would use our imagination.

The more we argue with ourselves the less likely it is that we will see what the people behind the screen are doing to us.