Its sad that innocent people (on both sides) are dying due to this conflict.
However, Hamas is a terrorist organization whose charter calls for the destruction of Israel, so do you expect Israel to go easy on them ? If Israel lets them go now, do you think they will let Israel survive ?
Hamas were voted in by the Palestinian people through the 'democratic' process so they are hardly a shady undercover hiding in the mountains type terrorist organisation ... if you want to call them terrorists you'll have to consider the Israelis in the same context... terrorism is not just about rockets bombs, their are many forms to it... denying someone access to water, food, medical treatment is just as bad.