You'll recall that in the climactic episode of The Lord of the Rings there was a walled city in which perhaps thousands of people, including many women, children, and elderly took shelter from inhuman savages who had laid seige to their fortress. The attackers thirsted for the blood of the hapless inhabitants and were eager to utterly destroy them and their city.
Those who huddled in terror within feared they would be horribly raped, tortured, and killed in the most gruesome fashion, but they took hope from the fact that they were protected by a phalanx of great warriors who had come from distant lands to defend the city from the savages who howled their threats from beyond the walls. The warriors were very brave and highly skilled in the art of war, but they faced enormous difficulties and what seemed to be overwhelming odds.
So, one night they decided that protecting those who shivered in fear in their hiding places really wasn't worth the cost and they considered leaving. "But what of the poor women and children in the fortress?" some asked. "Aren't they depending on us? Haven't we promised we'd protect them? Won't they be slaughtered if we abandon them?"
The reply came down from their superiors that "these people should be able by now to fend for themselves, and if they can't that's their problem, not ours." Thus the mighty army rode out that night under cover of darkness, fleeing to safety, and the people inside the fortress wept bitterly as the savage beasts swept in and brutally murdered them all.
Actually, that last part didn't happen in the movie, but only because the warriors in the story weren't listening to Harry Reid and MoveOn.org.
RLC
