the parthenon marbles problem: who owns a nation's soul when it's sitting in someone else's museum.
means tangible or intangible heritage - artifacts, monuments, traditions, sites - so tied to a group's identity that international law treats destroying or stealing it as a special kind of crime.
from codified after WWII's mass looting, when the world realized armies burn libraries and steal paintings as deliberately as they take territory; the 1954 Hague Convention made 'cultural property' a legal term, born directly from watching the nazis loot europe museum by museum.
parthenon marbles — british museum since 1816, greece wants them back
benin bronzes — looted 1897, germany began returning them in 2022
bamiyan buddhas — taliban dynamited them in 2001, unesco condemned it as a war crime
nefertiti bust — berlin museum, egypt disputes its 1912 export