Complete non-violence is complete absence of ill-will against all that lives. It therefore embraces even sub-human life, not excluding noxious insects and beasts. They have not been created to feed our destructive propensities. If we only knew the mind of the Creator, we should find their proper place in His creation.
From a philosophical perspective, I want to fight off isolationism and protectionism, be it part of another voice out there that says, wait a minute, what matters to women in Afghanistan matters to America. An isolationist point of view says it doesn't matter. The articulation of "all life matters" helps frame the case that it does matter what happens to a woman in Afghanistan.
Two Chinamen visiting Europe went to the theatre for the first time. One of them occupied himself with trying to understand the theatrical machinery, which he succeeded in doing. The other, despite his ignorance of the language, sought to unravel the meaning of the play. The former is like the astronomer, the latter the philosopher.