I do not believe God would want us to stand idly by while innocent children are killed......I just don't believe it...
Jesus said the greatest love was when we die for others, but said we must turn our own cheek. So, logically, we can and should defend, with our lives, the least of these (especially the Pre-born) and make sure you take a brother with you so he can cover your back, and you his. Jesus will avenge all the innocent murdered. God also views the acts of murder on a different time line than we do.