Thank you for 3 puzzles (in 3 pictures) today. They will make me busy for a good while. ;-)

Can you give more ‘clues’?

The tribal men (picture 1) is interesting with South American (Amazon) paint patterns and ‘Cossack hats’ and a man with European mustache. ???

The Aborigines sign language (pic 2) is more clear on origin but very cryptic in meaning of each sign.

The impressionistic gathering (of pink poles) has its own mysteries.

:-)