U2 Berlin Olympic Stadium July 12 2017

"It was a political statement to the entire world that he kept this garden going. He was this deeply philosophical character and to him it was an act of defiance to grow flowers in the middle of Aleppo. He actually wound up getting killed in an air raid, so it was a very sad ending, but Bono was really inspired by his defiance. When we were looking at that song, we decided that should be the focus geographically" - Edge on Summer of Love, 2017