Like in probably any group organized around philosophy/religion, there are those who take the philosophy in question and use it as a reason/understanding to do better, and those who use it as a reason/excuse to do worse. I've met lots of those selfish, incompassionate libertarians, and lots of selfish, incompassionate Christians. But I've also met some very nice libertarians and some very nice Christians. I agree, one is what one is and will either amplify the good points or abuse the bad points; the philosophy/religion doesn't make one good or bad, as evidenced by the thousands of schisms over interpretation of religion - everyone thinks everyone else is doing it wrong. So it is with philosophies as well. People who are concerned with the letter of the law - be that law religious, philosophical, or state - are usually unconcerned with the actual morality of the law they are upholding. To them, the law itself is the thing, not the justice or lack thereof in the law. As often stated, slavery was legal - not moral.