Haiti: questions for journalism (part two) guilt and involvement

The Haitian earthquake was a terrifying TV tableau of human misery, pain, and fear. Emotions of hope, despair and disbelief swept around the island with the seismic shocks. So its hardly surprising that witnesses to the aftermath also felt swamped by human feelings. How can journalists show that emotion without succumbing to it? How involved should a journalist get in helping those she watches?