Why are white people specifically targeted. As someone of an Indian background, I've seen plenty of Hindu nationalist content on Facebook, and -- despite it actually affecting my Christian family who are still in India -- there is no ban on that content. Such nationalism has led to more violence and death than any of the white nationalism stories.
It's affecting FB's bottom line.
White nationalism is in the news and on the rise in the US/Europe and therefore spooking advertisers who only really care what the pundits in US/Europe are talking about.
This soothes them over = money for FB.
My hope is that the algorithms and models developed for slowing the spread of White Nationalism will also work (down the road) for things like Hindu Nationalism, Chinese, etc.