There is no document of civilization which is not at the same time a document of barbarism.

[Es ist niemals ein Dokument der Kultur, ohne zugleich ein solches der Barbarei zu sein.]

Walter Benjamin
Walter Benjamin (1892-1940) German Jewish philosopher, cultural critic, essayist.
“Theses on the Philosophy of History [On the Concept of History; Über den Begriff der Geschichte]”, Thesis 7 (1940) [tr. Zohn (1973)]
    (Source)

(Source (German)). Alternate translation:

There has never been a document of culture, which is not simultaneously one of barbarism.
[tr. Redmond (2001)]