Without the benefit of context, but with the benefit of a degree of fashion knowledge, I'll posit that this photo was taken in the DRC, and that these are Congolese sapeurs, who occupy a unique and wonderful niche in the style world -- see https://en.m.wikipedia.org/wiki/La_Sape (La Sape being the movement of sapeurs and sapeuses, their female counterparts), as well as https://www.theguardian.com/artanddesign/gallery/2020/aug/27/congolese-dandies-meet-the-stylish-men-and-women-of-brazzaville-in-pictures , which has an excellent photo gallery showing examples of La Sape style.

[–] Reverendender@sh.itjust.works 8 points 3 weeks ago

Which is apparently quite a different thing than Sappers, which is where my mind went immediately.