Ланкре, Никола (Париж 1690-1743) – Палата правосудия в парижском парламенте во время правления Людовика XV Part 6 Louvre

The picture has something of this: people, many, group, man, wear, woman, ceremony, military, saint, monarch, child, priest, dress, position.
Perhaps it’s a painting of a large group of people standing in front of a room full of men and women, all of whom are wearing red and white.