Those who beat their swords into plowshares will do the plowing for those that didn't.
One owuld think. however, human natur ebeing what it is, this is an extremely thin hope to hold onto. Anyone who is selfish enough to not want to take responsibility for fighting (and this does NOT mean strictly military action) for the freedoms they enjoy or who avoids moral absolutes because they might cause offense (and thus conflict)can be reliably depended upon to look to themselevs first and others' second (thus all the NIMBY-style "social crusading" that goes on in Western countries -- somehow, we're (the West) "responible" for all the ills of the world, but somehow that responsibility ends when it falls upon the advocate's own doorstep. In that case, some nameless, faceless, ultimately-unanswerable entity is evoked to take their place, i.e. "society", "the government", etc).
I wouldn't expect the plowshare-beater to plow for me because his overriding concern is to get others to do his work for him, while maintaining a morally-superior attitude about it.