Conservatives. They tend to think largely in terms of absolutes. Now don't get me wrong, absolute values are important - by no means do I support moral relativism - but it's necessary to recognize the many shades of grey involved in individual cases too. That is, after all, what situational ethics is all about.
I suspect that many of the conservatives I've met don't recognize these gray areas largely because of their absolutist religious upbringing.

A few scenarios:
A nine year old girl, tragically, is raped and impregnated by her stepfather. What to do? According to the religious absolutist, abortion is, under all circumstances, 100% wrong. Unless the birth is life-threatening, she can't abort.

Moderate: I don't normally support abortion, but here it's necessary.
Liberal: I think abortion is a right that belongs to the mother. I would support her right to choose if this girl was nine or twenty nine, raped or non-raped. (although i would personally disapprove of it in the latter).
Conservative: Fucking baby killers! It's an innocent fucking BABY we're talking about!
(as opposed to a non-sentient cluster of cells, lacking a nervous system and the ability to feel pain)

I had a much better example but the stupid character limit fucked me over.

See my future definition, Conservative Black and White Thinking Disorder for that one.
I blame religion for turning so many conservatives into black and white thinkers.

And this is why I dislike religion - it so often stops people from thinking. If people were encouraged to think in terms of individual cases as opposed to coming to each and every unique situation with a preconceived bias (abortion is MURDER!)...well, I don't know. We might have a better world. Just maybe.
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A sexual act; an interacial three way double stuff where one male is black, the other white and the female of any race.
Me and Jay-Z gave his old lady a black and white cookie the other night. Wurd.
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A ginger person who tries to hide the fact that they are ginger by shooting their Bebo/MSN picture in monochrome mode, making them look like they have dark hair.
Person 1: "Look at Nick's bebo pic, it's black and white!"

Person 2: "He's just trying to hide his hair colour by making himself a black and white ginger"
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a) The governmentally backed, invasive and opressive institution, set-up to provide law and order.

b) Any individual belonging to such an institution.

c) The vehicles driven by said individuals.
Oh shit Jimmy, put down that pipe bomb, that crack pipe, and let go of those hookers. Here come the black n' whites.
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