Destruction by good intentions. If they knew the consequences, they were either mad or evil (and mad is too easy an excuse) but keep trying to convince themselves it's for the good. Paladins are there to protect innocents fro marauders, monsters and demons of the night, not thwocking an elf because it's skin is black! Keldorn is a reprehensible little t**d and if a PC in one of my games attacked every 'evil'-aligned person they saw, the character would be arrested and the PC would lose paladinhood as his alignment would have drifted towards Chaotic