Justifying Murder Quotes

After years of working with missionaries, I am tempted to conclude that their endeavors merely prolong a dying race's agonies for ten or twenty years. The merciful plowman shoots a trusty horse grown too old for service. As philanthropists, might it not be our duty to likewise ameliorate the savages' sufferings by hastening their extinction? Think of your Red Indians, Adam, think on the treaties you Americans abrogate & renege on, time & time & time again. More humane, surely & more honest, just to knock the savages on the head & get it over with?