Dr. Frances Cress Welsing, renowned psychiatrist and author of The Isis (Yssis) Papers: The Keys To The Colors, has died at 80 years old.

“Media Assassin” Harry Allen reported via Twitter that Welsing died early Saturday morning due to a stroke she suffered earlier this week.

Welsing studied the origins of white supremacy from a psychological and biological perspective and proposed the “Melanin Theory,” which posited black supremacy due to higher concentrations of melanin. Additionally, she used Freudian symbolism to describe white supremacy in relation to guns, money, the cross and gold.

Welsing did face some criticism because of her views on homosexuality, which she claimed was forced on black men by whites who wanted to reduce their population.

SEE ALSO: Longtime civil rights activist Julian Bond dead at 75


WATCH: Atlanta school cancels field trip to civil rights museum, parents not happy


CHECK OUT: How technology and social media spawned a new civil rights movement