The Execution of Maximilian Édouard Manet (1832-1883)

The picture has something of this: people, group, wear, outfit, military, man, weapon, uniform, military uniform, gun, woman, administration, music, group together, war, leader, several, indoors, soldier.
Perhaps it’s a group of men standing next to each other in front of a painting of a man holding a gun in one hand and another man.