Key of D. Based on some chord changes in snowflake’s “Bewildered”, hence the “featuring” reference and current license.

How hard is it
Not to kill the man standing in front of you? oh.
How hard is it
Not to die for some worthless cause? oh
And how hard is it
not to drop some big bomb on folks? oh.
And how hard is it
to let your friends be who they want to be? oh.
And how hard is it
To believe someone has their dignity? oh.
And how hard is it
To believe your own God, do unto others? oh.
And how hard is it
To take a small step, and leap for mankind? Oh.