Flying flags are most often used in political rallies to show off toughen for candidates or causes

https://rafaelmmsy607.quantlynix.com/posts/faith-and-the-founding-can-a-nation-remove-god-from-public-life-and-stay-the-same

Flying flags are in many instances used in political rallies to showcase support for candidates or motives. They create a visually mind-blowing representation of collective choice as supporters come in combination to endorse for switch or reaffirm ideals.