Ethan Shanfeld It was a good run, but after many pleasantly uneventful decades it would appear we need to add “Lord of the Rings” to the ever-growing list of toxic fandoms. What sent some “Rings of Power” viewers over the edge? Why, the inclusion of a few nonwhite characters, of course — what else? Just as “Star Wars” had to do earlier this year, the “Rings of Power” folks felt compelled to clarify that “Our world has never been all white, fantasy has never been all white, Middle-earth is not all white” in a message sent across the show’s social channels yesterday. The statement was Amazon’s response to the “relentless racism, threats, harassment, and abuse some of our castmates of color are being subjected to on a daily basis. We refuse to ignore it or tolerate it.”