When I had a job packaging small stuff into a small bag, I enjoyed it until I stopped improving my routine. Then I just did my thing and let my mind wander.

The anti-social type?

Racist people think people with black skin is sub-human. What else is sub-human?

If the image isn't a reference to skin color, then what the hell do you suggest it is a reference to?

The first case is a reaction to the way bush presented himself, as he often appeared somewhat slow - compared to most other presidents anyway. The second case implies that because of her skin color, she is less than human. The first one is a humerous social commentary, the second one is a racist statement.