The Piazzetta Looking toward San Giorgio Maggiore Francesco Guardi (1712-1793)

The picture has something of this: vehicle, people, transportation system, group, watercraft, military, lithograph, many, war, ship, skirmish, building, calamity, water, vintage.
Perhaps it’s a painting of a boat in a body of water with a crowd of people around it and a building in the background with a flag on top of it.