When the God of the universe died on a cross for those 7,000 people He made the ultimate statement regarding the value of human life. If we fail to act it may well be that we are denying Him.
Do really mean to say that Jesus would expect me to stand by and watch someone murder my children?
Jesus' mission was quite specific. His death on the cross was not pacifistic, it was quite literally to defeat sin, evil and death in the universe. It was, in a way, an act of war. In it he was coming to the defense of every person who ever lived.
That does not mean we are not called to defend ourselves and others by the appropriate means, in love and justice, not revenge. Yes, sometimes those means result in the death of the one who attacks us. But to fail to defend—even to the point of willingess to sacrifice our own life in that defense—would be to deny the very value of human life that Jesus died on the cross to protect.