Pi

Half a billion years ago there was no life on lands
For a second we were in the dark about how to go about that
You don't need to go this far
Let it be, leave me out
We've begun our arming process in case of self-defence
As human needs started to progress we've found excuses for ourselves
You don't need to go this far
Let it be, leave me out
A bullet bounced back from the head
The knife got broken on the chest
Thieves returned what they've stolen
Kids vomited the drugs out
And all the planes missed the target