Place: Buenos Aires, Argentina
Photos by me.
They are called Gauchos. They are skilled horsemen, reputed to be brave, if unruly; a national symbol in Argentina.
The word "gaucho" is applied metaphorically to mean "Noble, brave and generous", but also "One who is skillful in subtle tricks, crafty".
I met them outside Buenos Aires, Argentina, a few years ago. One offered me a ride. The other offered me a... ring. :-)