The response was entirely predictable.
It's sad that it was not predicted. This implies a measure of cultural disconnect and ethnocentrism. "This is our approach to doing things. If you don't like it, if it alienates you, don't tell us how to act. We're going to act in a way that might alienate and turn you off, but we really don't care. You have to accommodate us, and if you misunderstand us, that's entirely your problem. Don't tell us what you feel and think." It's one thing to tell a group what to feel and think; it's another to reject being told how members of a group feel and think and what, therefore, are ways likely to work with that group. Both are offensive, one being condescending and paternalistic the other being close-minded and egotistical. From those that demand much, at least something is to be expected.
Not a good opening salvo in closing wounds or healing. More of a venting or raising an issue in a way that does little justice to the isse but succeeds in making one side pissed and the other side feel powerful without actually having any additional power.
Neither is a good way of getting to yes. That it is repeated with the same results either makes me think people in BLM just aren't paying attention or don't care.
No, the way things were being done didn't work. That doesn't automatically mean that this is the only or best alternative.
In this, BLM || SYRIZA. (|| = 'parallels')