The video showing men dancing with guns is from a wedding in Pakistan held in 2020.
A video circulating on social media claims that Taliban militants celebrated the takeover of Afghanistan on August 15, 2021. The claim is false, as the video was shot in Pakistan and dates back to 2020.
In the video, a bunch of men can be seen dancing with weapons in their hands. However, a reverse image search of various clips in the video showed that it dates back to at least March 2021.
The same video was also posted on YouTube in September 2020, with ‘Bannu’, a city in Pakistan mentioned in the caption. The same video posted by another YouTube user suggests that the footage is from a wedding held in the same town.
Therefore, we conclude that the scene shown in the video has nothing to do with the current situation in Afghanistan, as the video was captured way before the country's takeover by the Taliban.