Murderous Racism In Minneapolis

I get why black Americans are angry and i understand why they are reacting as they have in Minneapolis but the reaction allows the story to move on and the last thing that should be happening is that the story moves on, the white hot spot-light should be on the policeman who knelt on George Floyd's neck and continued to do as he repeated that he couldn't breath.
It happens too much in America, shockingly by the very people whose motto is 'to serve and protect', and i accept that as a white woman living in England, i have no idea what the black's in America go through every single day but i see the blogs posts and comments and hear people speaking and i get an idea and it's horrendous but to live it, no, i never have to face that but that doesn't mean we can't speak out about it.
The policeman, Derek Chauvin, has since been sacked and there is open talk that he may be tried for murder which surely he should be but it seems that American police get away with things like this far too often. 
As i said i understand the protests and i get why parts of Minneapolis are ablaze and with the ridiculous Donald Trump fanning the flames by tweeting about shooting looters, the required leadership won't be coming from the very top just yet but don't give them an excuse to shift the focus away from what disgracefully happened to George Floyd and the real story, murderous racism in America.