Sisley Alfred 14 Juli Marly le Roi Sun Alfred Sisley (1839-1899)

The picture has something of this: group, people, many, military, lithograph, crowd, man, landscape, soldier, vehicle, battle, building, cavalry, war, flag.
Perhaps it’s a painting of a group of people walking down a street in front of a building with flags on top of it and a flag pole in the middle of the street.