The best response I have heard was on NPR who quoted the wonderful Fred Rogers on how to cope with the fear and sadness happening around you:
"When I was a boy and I would see scary things in the news, my mother would say to me, "Look for the helpers.
You will always find people who are helping."
To this day, especially in times of "disaster," I remember my mother's words and I am always comforted by realizing that there are still so many helpers – so many caring people in this world."
I definitely look for the helpers - and more and more strive to be one myself.