Now if you like to get to the real root of the problem, see exactly what black people are talking about, just watch the police video of the shooting of Daniel Shaver.
He’s white so maybe that will lessen you confusion.
In the minds of a militarized police force, “making a mistake” is a capital offense. It gives them the right to brutalize and murder anyone at anytime for the smallest infraction. If you in some way accept that as acceptable, then I would expect you to say simply “no lives matter”. If you do not like to say “black lives matter” and insist it should be “all lives matter” then you’re arguing semantics and ignoring the issue.
You can take race out of it and still be for the BLM cause. So why hide behind a difference of one word? As someone posted on Facebook, “if all lives mattered, there would be no need for black lives matter”.