It's commonly suggested that the Pentecost story is a reversal of the chaotic separation of the Tower of Babel. That point gets debated. What isn't debatable is that people remain separated in abundant ways.
I grew up long before the age of YouTube. My Sunday school rooms were in a church basement in western Nebraska. We didn't even have filmstrips! When I think back to the story of the first Pentecost, I remember an illustration on one of those Sunday school leaflets that we kids took home each week. The Pentecost leaflet showed men in robes standing in a room looking out of some windows.
What happens to a person when the Holy Spirit descends like a tongue of fire? In Acts, those present were filled with the Holy Spirit. We all long for this. We all seek fulfillment. I saw this once when I was conducting a spiritual retreat for members of various 12-step groups. Each person spoke powerfully about how the pain of emptiness in his life had led him down wayward paths. Each had discovered that “you can never get enough of that which will not satisfy.”
A pastor was having a difficult time reading the book of Acts because
she kept thinking about the imperial context in which it is set. How is
her/our understanding of the story changed if we keep in mind that
Jerusalem falls well within the bounds of the Roman Empire?