Not standing is not a crime.  BLM is supported by millions of white folks, see any blacks in the KKK?

You also are not telling the truth about BLM.    I'm guessing, (unless you tell me otherwise), you don't take any charge of racism against blacks seriously, because you've never seen it or experienced it as a black male.  That's pretty normal.  Your personal experience is your guide - as it is for most people.
  
You don't take Any charge seriously.  I don't take Every charge seriously.

Police for doing a really hard job, under lot's of stress and risk to their personal safety.   That kind of stress can lead to mistakes and change personal values.   Failed neighborhoods create stress too.  I have met blacks with racist attitudes as well.

I know there are racist in the police force because I've talked to both local,(not Eugene) and state police and heard them use the word 'iggers'.    It happens.  It's NOT true of all police.   But to say it never happens is lie.