Columbia subject headings:
Arts, Modern--Congresses.
Arts--Themes, motives--Congresses.
Violence in art--Congresses.
Harvard subject headings:
Arts, Modern--Congresses
Arts--Themes, motives--Congresses.
Violence in art--Congresses.
Princeton subject headings:
Arts, Modern--Congresses.
Arts--Themes, motives--Congresses.
Violence in art--Congresses.