This song is possibly about The Sunflower by Simon Wiesenthal, a famous holocaust survivor and Nazi hunter. From the blurb on the Amazon page:
Author Simon Weisenthal recalls his demoralizing life in a concentration camp and his envy of the dead Germans who have sunflowers marking their graves. At...
[Verse 1]
When they found your body
Giant X's on your eyes
With your half of the ransom
You bought some sweet, sweet, sweet
Sweet sunflowers
And gave them
To the night
[Verse 2]
Underneath the Star of David
A hundred years behind my eyes
And with my half of the ransom
I bought some sweet, sweet, sweet
Sweet sunflowers
And gave them
To the night
[Refrain]
Sweet, sweet, sweet, sweet sunflowers
Sweet, sweet, sweet, sweet sunflowers
Sweet, sweet, sweet, sweet sunflowers
Sweet, sweet, sweet, sweet sunflowers
And gave them
To the night
Sunflower was written by Alan Sparhawk & Mimi Parker & Zak Sally.
Sunflower was produced by Steve Albini.