Chögyal Namkhai Norbu Rinpoche says that if one doesn't or can't eat-meat/drink-alcohol with Awareness, that it's better to not do it at all (Vajrayana in general says that eating-meat/drinking-alcohol can
be Compassionate; although there are other threads where this is discussed at length).
Anyway, an early mentor (not a Guru per-sé)—who posted variously, I believe, as God Body, Knowledge, Ausar-Ra—wrote extensively about how the Irano-Aryans venerated/were Ashura's or Asura's, and how the Indo-Aryans venerated/were Deva's or Sura's or Shura's. His idea was that the Irano-Aryans/Asura's/Ashura's were much kinder to the (Proto?)Elamites than the Indo-Aryans/Deva's/Shura's/Sura's were to the (Proto?)Dravidians.
He based a lot of his conclusions on the following types of old Masonic writings:
"Anacalypsis Vol 1 + 2" by Godfrey Higgins
"Gerald Massey's Lectures"
"Book of the Beginings" by Gerald Massey
"Signs and Symbols of Primordial Man"
"The Royal Secret"
"Morals and Dogma" Albert Pike
"Irano Aryan Dieties and their worship in the Zend Avesta" by Albert Pike
"Indo Aryan Dieties and their worship in the Rig Veda" Albert Pike
"Lectures of the Arya" Albert Pike
"Celestial Ship of the North" E. Valentia Straiton
"Rama & Moses: The Aryan Cycle & the Mission of Israel (1923)" by Edward Schure
"The Hermeneutic Interpretation of the Social State of Man and the Destiny of the Adamic Race" by Fabre D'Olivet
"Herbraic Tongue Restored" Vol 1 + 2, by Fabre D'Olivet
"Isis Unveiled" & "The Secret Doctrine" by H.P. Blavatsky
"The Book of the Glory of the Blacks Over the Whites" by Al Jahiz
"The Destruction of Black Civilization" by Chancellor williams
"Jesus and Moses are Buried in India" by Gene Matlocke
"The Last Atlantis Book You'll Ever Read" by Gene Matlocke
"Siva and Serpent worship" by Staniland Clarke
"Phallic and Nature Worship"
"Symbollism" by Macoy
"The Arcane Schools" by John Yarker
"Pre-Historic Nations or Inquiries Concerning Some of the Great Peoples and Civilizations of Antiquity and their Probable Relation to a still Older Civilization of the Ethiopians or Cushites of Arabia (1869)" by John D. Baldwin
And even: "Sexual Secrets: The Alchemy of Ecstacy" Nik Douglas & Penny Slinger
It was also his conviction that the Hebrew YHVH is actually Shiva (something that Occultists basically agree with), and that Siva or Shiva is the Yacub or Yakub (Jacob) of the Nation of Islam & Nation of Gods ands Earths who first started eugenics in order to create the Caucasian race, Deva's, Devi's, or 'White Devils' via the intentional selective-breeding process. The gene that lacks melanin is recessive, yet the dominant genes containing melanin can be selectively-breeded out over time (see: Gregor Mendel's Punnett Squares).
Too bad his posts are long-gone from cyber-space. They were interesting.
He also recommended studying and practicing the Buddha Dharma.
I personally am more in agreeance with H.P. Blavatsky's view that the Aryans were not only Caucasian (many of them were mixed, perhaps even during the Aryan Mongolian-First-Subrace); and also that—while there's not much doubt that Aryans did kill many Dravidians—the Aryans peacefully integrated with and settled alongside with the Elamites/Dravidians. But maybe my idea is a romanticized one.
Ra Un Nefer Amen says that the Hebrews were largely Caucasian and that they were always foreign to Palestine; yet even so, he also says that most of the Biblical tales of the Hebrews invading & killing Palestinian natives, are not literal and did not happen for the most part. Either way, the contemporary Israeli's are obviously trying to re-enact the bloody Bible-stories by killing and pushing out Palestinians. Whether the Israeli Yiddish/Ashkenazi/Khazars are the actual descendants of the ancient Hebrews, I know not. Maybe the Tribe of Judah was Æthiopian-Palestinian though?
Anyhow, I think that Buddhism attributed a specific class of beings to the Deva-Loka simply in order to appeal to the conventions of the time & place, which happened to be largely 'Aryan'-dominated at the time.
As can be seen in my earlier posts in this thread, I don't doubt that there are beings in other dimensions who can't be ordinarily perceived with the physical senses.
P.S. Considering their Iranian connection, and that they do many things the opposite way that Buddhists do them (such as the direction that they circumambulate Mount Kailash for example) I'm surprised that the Bönpo's of Yungdrung Bön don't have the Deva's and Asura's reversed.
And speaking of the Elamites and Zhang-Zhung or Shang-Shung, I wonder if the Little Black Headed Man of Tibet (see: Samten Karmay) was possibly Sumerian, considering that the Sumerians were known as the Black-Headed People.
See also the thread in the Book-Review sub-forum called "Upasika Blavatsky".