Ray Batchelor writes: “Taken from an article by Walter Nelson and used by him as evidence of historical same sex dancing. http://www.walternelson.com/dr/same-sex-dance No source is given by Nelson for the image so it is impossible to say which dance they are dancing. It could be tango. Andrew David Field writing
Ray Batchelor writes [and adds, 15 01 2020 – see below]: “Downloaded from Wikimedia Commons. Beyond believing what most sources indicate – that these are men, that they are dancing (or practicing, or posing) with each other in a street in Buenos Aires at some time in the 20th century,