Black absorbs sunlight. White reflects it. In order to combat climate change, we need black people to stay indoors, and white people to lie down naked in the garden. When they get too tanned, they will have to stay indoors too.
A black person. To make matters worse, he's wearing a black hat too. Fortunately for the global climate, he's inside, where he can't do too much harm.
White person, with blonde hair. Outside, doing her bit.
Good show, chaps.