This sensitivity stems from compassion. Similarly, people who take to vegetarianism, do so largely because of their compassion for animals. They believe in love and compassion being the hallmark of their relationship with all of God's creatures, whether humans or animals. Compassion must be placed at the heart of human life, in a world governed far too long by principles of power and destructive control. Compassion should pervade the spirit and spur us towards the constructive good of mankind.
Compassion is as close to our 'natural' disposition as any of the other virtues.
The challenge lies in not allowing animosity and prejudice to stunt its natural growth.