So what would be the problem with changing the name of the movement to ALM all lives matter and making the focus against police militarisation rather than some divisive narrative of racism?
Those who make hay out of the name and have ignored the movement itself for almost a decade now are a small, ineffective minority.
The largest civil rights protest movement in American history doesn't need to spend its time focus-grouping and hand-wringing about people like that.
No movement has ever changed anything by seeking to get 100% of everyone on board, least of all those most uninformed, hostile, and acting in bad faith.
Do they? I'm not sure what leads you to think that. I have no evidence other than anecdote, but from what I see, I'm not sure that your claim is true.