Back to past Cranberries - Zombie

I remember when I was a child, I couldn't understand the meaning of this song and clip, but I was crying every time when listened or watched it. And only when I grew up I understood that this song was about the war conflict between Ireland and England, violent conflict with helpless victims and "mother's breaking heart", and zombies were soldiers that were not like people more, but like killing machine, obsessed by ideas of politics...