It's fascinating to see how certain groups and civilizations like the Vikings end up being acceptable, even venerated in our society despite their horrific beha

It's fascinating to see how certain groups and civilizations like the Vikings end up being acceptable, even venerated in our society despite their horrific behaviour (by current standards at least). For example: - Roman empire, slavery, crucifixion, invasions ... where to start, perhaps 400,000 deaths in the Colosseum alone https://darkrome.com/blog/Rome/7-bloody-colosseum-facts https://darkrome.com/blog/Rome/7-bloody-colosseum-facts, - Celts - slavery https://en.wikipedia.org/wiki/Celts#Society https://en.wikipedia.org/wiki/Celts#Society, human sacrifice https://www.irishcentral.com/roots/history/did-the-ancient-celts-practice-human-sacrifice https://www.irishcentral.com/roots/history/did-the-ancient-c... - Spartans with their Helot's https://allthatsinteresting.com/krypteia-sparta https://allthatsinteresting.com/krypteia-sparta - Arab empires https://en.wikipedia.org/wiki/Arab_slave_trade https://en.wikipedia.org/wiki/Arab_slave_trade - Ottoman's - https://en.wikipedia.org/wiki/Slavery_in_the_Ottoman_Empire https://en.wikipedia.org/wiki/Slavery_in_the_Ottoman_Empire, https://en.wikipedia.org/wiki/Janissary https://en.wikipedia.org/wiki/Janissary - Mongol's, up to 40 million deaths https://www.history.com/news/10-things-you-may-not-know-about-genghis-khan https://www.history.com/news/10-things-you-may-not-know-abou..., sack of Baghdad https://www.warhistoryonline.com/medieval/the-sack-of-baghdad-in-1258.html https://www.warhistoryonline.com/medieval/the-sack-of-baghda... Are widely acceptable in our current society. What is about societies like the Vikings (invaders, human sacrificers and slave traders https://www.nationalgeographic.com/news/2015/12/151228-vikings-slaves-thralls-norse-scandinavia-archaeology/ https://www.nationalgeographic.com/news/2015/12/151228-vikin...) that means they don't get talked about in the same way that Germany's Nazi regime is? Is it politics? Or just time? But how come some groups statues and iconography are "acceptable" while others are not? (sorry for the long post that's wandered off topic ;-) )