i think joisey lowered it for a female druggy singer...
They also did it for a saxophone player, of all things.
Our flag is dictated by protocol and honorary custom.
If you look up "flag protocol" or "flag customs", you'll find directions about how to, or in which way, but there are no orders per se'.
We citizens f'rinstance, can lower a flag to half staff when we learn of our military childs' death.
People may ask us why, and we will explain, and no "law" was violated, NOR any protocol broken.