The first obstacles (to any reasonable idea):
Euphemists. "I mean merely that short words startle them, while long words soothe them. And they are utterly incapable of translating the one into the other, however obviously they mean the same thing."
Casuists. " Suppose I say "I dislike this spread of Cannibalism in the West End restaurants." Somebody is sure to say "Well, after all, Queen Eleanor when she sucked blood from her husband's arm was a cannibal.""
Autocrats. "They are those who give us generally to understand that every modern reform will "work" all right, because they will be there to see"
Precedenters. "The Church is expressly bound to meekness and charity; and therefore cannot be cruel"
Endeavourers. "as if one had a right to dragoon and enslave one's fellow citizens as a kind of chemical experiment"