The 2020 Netflix drama series "Cursed", is a vaguely Arthurian tale of a powerful fairy princess and a young man named Arthur, in a medieval world in which a powerful church is seeking to exterminate the fey. These fairies are human-like, with only subtle differences from the humans and a greater connection to nature, more another race of humans from an earlier time, than another type of being entirely.
While it is obviously fiction (fairies, magic, etc.), it does a better job, I think, at conveying the deeper emotional, social, and cultural reality and feel of the genocidal ethnic, racial and religious wars of the Neolithic, Bronze Age, and Iron Age transitions (and beyond), than many non-fiction efforts to describe these historical events. Sometimes fiction can be truer than non-fiction at conveying the human essentials.
Indeed, the King Arthur story itself, is a legendary history of one such transition in Britain itself, so it makes sense that done well, it would.