Here is the song lyric of Dolores O'Riordan :

Another head hangs lowly
Child is slowly taken
And the violence caused such silence
Who are we mistaken
But You see it's not me,
It s not my family
In your head,in your
Head they are fighting
With their tanks, and their bombs
And their bombs, and their guns
In your head,
In your head they are cryin'
In your head
In your head
Zombie
Zombie
Zombie
What's in your head, in your head
Zombie
Zombie
Zombie

Another mother's breakin'
Heart is taking over
When the violence causes silence
We must be mistaken
It's the same old theme since 1916
In your head,
In your head they're still fightin'
With their tanks, and their bombs
And their bombs, and their guns
In your head they are dying

In your head, in your head
Zombie
Zombie
Zombie
What's in your head, in your head
Zombie
Zombie
Zombie