What does it really mean?

 “The Victorious Allies” (1918) (oil on canvas), by N.C. Wyeth (1882-1945), in the show “For Which It Stands,’’ at the Fairfield (Conn.) Art Museum, through July 25

The museum says:

“Commemorating the 250th Anniversary of the U.S., this major loan exhibition explores key moments in our country’s history through artworks depicting the American flag, from WWI to the present day. Artworks on view will challenge viewers to consider who the American flag truly represents and whether justice is available to all.’’