I'll try to explain it in a way you can understand it.
What do past and present cultures that encourage open displays of affection between men have in common?
Misogyny, that's what. The same culture that fosters male emotion suppresses female emotion. Look at those cultures today: arabs, indians, some africans, all people that live in places where women are oppressed, considered dirty and inferior. Two men can hold hands in public in muslim countries but a man and a woman? A man and a woman holding hands in those places causes scandal, horror, revulsion, will get the woman arrested and likely killed for "public indecency" because the same act that is OK between men suddenly becomes indecent the moment a woman is involved, because a woman is seen as something dirty and disgusting and not worthy of giving or receiving public displays of affection. All a woman deserves is violence if she dares to express her sexuality and not be the sexless alien thing men want her to be. Western culture back when these photos >>57225
took place was exactly the same. Women were seen as nothing but a source of shame and scandal and this caused a lot of suffering to women back then just like it causes a lot of suffering to women now where they're still stuck in that mentality.