@snood,
I agree with most of what you are saying Snood. I certainly agree with you on the need to push this issue. Where I disagree is the tactics.
The time for the BlackLivesMatter movement is now. They have a space in the public mind. The have the media's attention. They have candidates talking about it. They have an understandable and clear grievance.
If (and this is a big if) they use this moment, when all the stars have aligned for them, they have the opportunity to make real progress. They will not just make waves, but they have the ability to push our society in a better directly... and to put the issue of racial injustice at the hands of law enforcement into the public discussion for a long time.
If this movement turns into just an angry protest... where the goal is to make people pay rather than make real progress, then they will lose the moment and society will be the worse for it.
How these protests unfold is important. The people who care about the Black Lives Matter movement should be very aware of this.