Perhaps the problem is what is actually brought up. Police brutality is a 'problem' when it occurs. Its not something that involves a majority of law enforcement and its not something that is done only towards blacks. And yet...the discussion about it IS racial. THATS why the discussion of day to day killing gets brought up. There IS no discussion of brutality in general or questioning of police shootings in general. Please dont pretend there is. If that were the case the conversation would not be led with the hashtag #Blacklivesmatter. So SINCE the only discussion is about black lives mattering, then why do the black lives that are lost at the hands of law enforcement 'matter' and not the 10,000+ lost at the hands of other blacks?
If you want to argue about police brutality in general and not just limit it to blacks, then go right ahead. It makes sense to want to do that in light of these high profile cases. But using the argument "What about Blacks killing more Blacks" doesn't do any good, it just muddles the waters.
And to say that black on black crimes are never discussed is just dishonest. EVERYtime that there is a high profile race related crime involving blacks, this argument is brought up.
Hail to the King baby!
Your last line kind of makes the point. The ONLY time it is considered is when it is brought up during a racial incident and then, there is no dialogue...just a desperate attempt to run away from the facts.