Moving to another place (Seattle) where (for instance) racism is still a part of the fabric of everyday life but a part of the social discussion was challenging as I was introduced to ideas that felt unintuitive. But empathy helped me grow and understand more than I did, and helped me value and pursue that growth.
It also helped me recognize (for other instances) I had unconsciously internalized other biases. I had rejected my own sexuality (I identify queer, demisexual) and my gender identity (I accept he/him/they/them pronouns equally).
I hope a little empathy goes far for you. It’s not often in a followup like this I see someone willing to reciprocate the empathetic spirit and acknowledge a contrary view kindly. Who knows where it’ll take you, but I hope you’ll consider that your experience may be coloring your ideas and that you may have room for other ideas in that consideration.
And I don't like to pick apart semantics, but the way you use the term "American BLM" is a Straw Man and an Ad Hominem deployed in tandem. It's difficult to have a constructive debate when it's posed in those terms.
When you say "American BLM" as if it were a monolithic entity and attach negative attributes to it, that goes to the heart of the matter.
I don't know how to have a conversation with you from across that chasm.