another way to think of it is like this: liberals and leftists tend to generally prefer to avoid thinking about things in terms of applying universal rules to specific circumstances and would rather prefer to look at the evidence in front of them in determining an answer that is most relevant to the situation at hand. that is, liberals prefer an empirical-based reasoning that tries to understand the world the way it is, whereas conservatives prefer axiomatic systems that try and define the world from first principles. pacifism is clearly axiomatic rather than empirical and consequently is inherently right-wing. but, the basic point is that a liberal would consequently fundamentally just not understand how a pacifist thinks; to decide that these rules are paramount, and not subject to experience and evidence, that the rules are always the same in all circumstances no matter what, would simply make no sense to a liberal. conservatives need structure and order; liberals need uncertainty and chaos.