At night, a group of people are holding hands and dancing in a circle in a square, in front of a building with columns

At night, a group of people are holding hands and dancing in a circle in a square, in front of a building with columns. A man in a red jacket is guiding them. A Bulgarian flag is standing nearby. The square is paved in gray stone and lit by street lamps. Other people stand on the edges of the dance circle, watching. The building has multiple stories and windows.