BLM needs a leader. Or at least a committee. Or something. And that leadership needs to get in front of cameras and denounce, forcefully and clearly and without obfuscation, the violence and the murder of police officers. This would coalesce and legitimize BLM to the mainstream. It would soften the adversarial air about the thing. Their silence on these murders speaks very badly of them.
The rest of that wonky shit in the above list is probably the work of some nutcase who happened to be the one throwing together the website, probably with little oversight or central message because...the leadership and accountability that could have cleaned it up doesn't seem to exist.
I can't think of any other reason nearly all of that didn't get trapped in a sanity filter somewhere before the publish button was hit.