Once again, NextDoor has proclaimed themselves advocates for BLM. Can you grasp that?
Why would I having seen no evidence of it? Perhaps it may be in the major urban areas. Again I would not know since in my area they (as an organization) behave acceptably.
Nextdoor rooms are neighborhood-level forums so your experience will vary according to a lot of different factors.
I find ours pretty damn boring, people posting stuff like a loud car or motorcycle flew past their house or mean kids chasing cats...this is a lake community so mostly the gab centers around shit that gets lost and comes ashore on somebody’s property.
It’s useful though helps with finding lost pets and things, this State is deep blue but not the county, people honor the rules from what I’ve seen very little flame wars having to do with politics.